Symmetrical seal CNR

Description

The CNR is a single-acting symmetrical seal, made of tough, wear-resistant fabric and rubber, intended for sealing light- and medium-duty hydraulic cylinders. Its symmetrical profile allows it to be used on both the piston and the rod, and even in double-acting cylinders. Thanks to its robust design, it provides good sealing even when the rods and guide rings are worn.

Assembly

Fabric symmetrical seals are fitted in split pistons or open grooves with a retainer ring. Chamfer and remove the sharp edges of the housing so as not to damage the seal, and clean the installation space carefully before fitting. Guide rings or guide strips are recommended for guiding the piston or the rod.

Advantages

Materials

Available in different compounds depending on the fluid and the working temperature: NBR, EPDM, FKM, FFKM, NR, CR and VMQ in hardnesses between 70 and 90 Shore A, and PTFE in a hardness of 60 Shore D, all of them with a fabric reinforcement that provides resistance to extrusion. It offers good performance against mineral and biodegradable oils, water-soluble and water-glycol fluids, and mineral-based lubricating oils and greases.

Technical data

NO.	Ød	ØD	b	B
U-375 CNR	3	7	5	6
U-3105 CNR	3	10	5	6
U-5104 CNR	5	10	4	5
U-6165 CNR	6	16	5	6
U-64516 CNR	6	45	16	17
U-8.5227 CNR	8.5	22	7	8
U-11184.3 CNR	11	18	4.3	5.3
U-12.722.224.9 CNR	12.7	22.22	4.9	5.9
U-12.725.45 CNR	12.7	25.4	5	6
U-12.725.48 CNR	12.7	25.4	8	9
U-12.725.48.25 CNR	12.7	25.4	8.25	9.25
U-14224.5 CNR	14	22	4.5	5.5
U-14225 CNR	14	22	5	6
U-14225.3 CNR	14	22	5.3	6.3
U-14225.5 CNR	14	22	5.5	6.5
U-14226 CNR	14	22	6	7
U-14245 CNR	14	24	5	6
U-14245.3 CNR	14	24	5.3	6.3
U-15245.3 CNR	15	24	5.3	6.3
U-15245.5 CNR	15	24	5.5	6.5
U-15255 CNR	15	25	5	6
U-15256 CNR	15	25	6	7
U-15265 CNR	15	26	5	6
U-15286.3 CNR	15	28	6.3	7.3
U-15286.5 CNR	15	28	6.5	7.5
U-15309 CNR	15	30	9	10
U-16244.5 CNR	16	24	4.5	5.5
U-16245 CNR	16	24	5	6
U-16245.4 CNR	16	24	5.4	6.4
U-16245.5 CNR	16	24	5.5	6.5
U-16246.5 CNR	16	24	6.5	7.5
U-16265 CNR	16	26	5	6
U-16265.25 CNR	16	26	5.25	6.25
U-18244 CNR	18	24	4	5
U-18254 CNR	18	25	4	5
U-18254.5 CNR	18	25	4.5	5.5
U-18255 CNR	18	25	5	6
U-18265.4 CNR	18	26	5.4	6.4
U-18266.5 CNR	18	26	6.5	7.5
U-18286 CNR	18	28	6	7
U-18286.3 CNR	18	28	6.3	7.3
U-18286.5 CNR	18	28	6.5	7.5
U-18288 CNR	18	28	8	9
U-18306 CNR	18	30	6	7
U-183810 CNR	18	38	10	11
U-19285.5 CNR	19	28	5.5	6.5
U-19.0525.44.5 CNR	19.05	25.4	4.5	5.5
U-20275 CNR	20	27	5	6
U-20285 CNR	20	28	5	6
U-20285.3 CNR	20	28	5.3	6.3
U-20285.5 CNR	20	28	5.5	6.5
U-20306 CNR	20	30	6	7
U-20306.5 CNR	20	30	6.5	7.5
U-20308 CNR	20	30	8	9
U-20325.5 CNR	20	32	5.5	6.5
U-20326 CNR	20	32	6	7
U-20326.5 CNR	20	32	6.5	7.5
U-20328 CNR	20	32	8	9
U-21.641.2711 CNR	21.6	41.27	11	12
U-22305.5 CNR	22	30	5.5	6.5
U-22306.4 CNR	22	30	6.4	7.4
U-22324 CNR	22	32	4	5
U-22325.25 CNR	22	32	5.25	6.25
U-22325.5 CNR	22	32	5.5	6.5
U-22326 CNR	22	32	6	7
U-22328.5 CNR	22	32	8.5	9.5
U-223813.5 CNR	22	38	13.5	14.5
U-22.228.576.35 CNR	22.2	28.57	6.35	7.35
U-22.2242.4612.7 CNR	22.22	42.46	12.7	13.7
U-24326.4 CNR	24	32	6.4	7.4
U-24367 CNR	24	36	7	8
U-25337 CNR	25	33	7	8
U-25356.3 CNR	25	35	6.3	7.3
U-25386.5 CNR	25	38	6.5	7.5
U-25.434.87 CNR	25.4	34.8	7	8
U-25.434.926.35 CNR	25.4	34.92	6.35	7.35
U-25.4386.3 CNR	25.4	38	6.3	7.3
U-25.438.16.35 CNR	25.4	38.1	6.35	7.35
U-25.6385.5 CNR	25.6	38	5.5	6.5
U-26346.4 CNR	26	34	6.4	7.4
U-26386.5 CNR	26	38	6.5	7.5
U-27326 CNR	27	32	6	7
U-28287 CNR	28	28	7	8
U-28365 CNR	28	36	5	6
U-28365.7 CNR	28	36	5.7	6.7
U-28366.5 CNR	28	36	6.5	7.5
U-28.641.276.35 CNR	28.6	41.27	6.35	7.35
U-29408 CNR	29	40	8	9
U-30388 CNR	30	38	8	9
U-30406 CNR	30	40	6	7
U-30407.5 CNR	30	40	7.5	8.5
U-304510.5 CNR	30	45	10.5	11.5
U-305015 CNR	30	50	15	16
U-30.537.54.5 CNR	30.5	37.5	4.5	5.5
U-30.7554.915 CNR	30.75	54.9	15	16
U-31.844.456.35 CNR	31.8	44.45	6.35	7.35
U-32404.5 CNR	32	40	4.5	5.5
U-32406.3 CNR	32	40	6.3	7.3
U-34.9246.996.35 CNR	34.92	46.99	6.35	7.35
U-34.9250.88.75 CNR	34.92	50.8	8.75	9.75
U-35457.3 CNR	35	45	7.3	8.3
U-35458 CNR	35	45	8	9
U-35477 CNR	35	47	7	8
U-35486 CNR	35	48	6	7
U-35486.5 CNR	35	48	6.5	7.5
U-35487 CNR	35	48	7	8
U-35497 CNR	35	49	7	8
U-35508 CNR	35	50	8	9
U-35508.5 CNR	35	50	8.5	9.5
U-355010 CNR	35	50	10	11
U-35.7146.734.77 CNR	35.71	46.73	4.77	5.77
U-35.7150.88.5 CNR	35.71	50.8	8.5	9.5
U-36446 CNR	36	44	6	7
U-36468 CNR	36	46	8	9
U-364610 CNR	36	46	10	11
U-36489.5 CNR	36	48	9.5	10.5
U-37.157.159 CNR	37.1	57.15	9	10
U-37.6528 CNR	37.6	52	8	9
U-38508 CNR	38	50	8	9
U-38528 CNR	38	52	8	9
U-38.150.86.35 CNR	38.1	50.8	6.35	7.35
U-38.153.9711.25 CNR	38.1	53.97	11.25	12.25
U-38.160.3218 CNR	38.1	60.32	18	19
U-40506.4 CNR	40	50	6.4	7.4
U-40507.3 CNR	40	50	7.3	8.3
U-40507.5 CNR	40	50	7.5	8.5
U-405010 CNR	40	50	10	11
U-40555.5 CNR	40	55	5.5	6.5
U-40559.5 CNR	40	55	9.5	10.5
U-405510 CNR	40	55	10	11
U-41.353.976.35 CNR	41.3	53.97	6.35	7.35
U-42507.5 CNR	42	50	7.5	8.5
U-428625 CNR	42	86	25	26
U-44508 CNR	44	50	8	9
U-44579.5 CNR	44	57	9.5	10.5
U-44.563.510 CNR	44.5	63.5	10	11
U-455510 CNR	45	55	10	11
U-456010.5 CNR	45	60	10.5	11.5
U-456310 CNR	45	63	10	11
U-456312 CNR	45	63	12	13
U-4563.511 CNR	45	63.5	11	12
U-456510 CNR	45	65	10	11
U-456512 CNR	45	65	12	13
U-456518 CNR	45	65	18	19
U-457012.5 CNR	45	70	12.5	13.5
U-457520 CNR	45	75	20	21
U-46638 CNR	46	63	8	9
U-47637.8 CNR	47	63	7.8	8.8
U-476311.5 CNR	47	63	11.5	12.5
U-47.6257.156.5 CNR	47.62	57.15	6.5	7.5
U-4863.513 CNR	48	63.5	13	14
U-49578.5 CNR	49	57	8.5	9.5
U-50607 CNR	50	60	7	8
U-5063.58.5 CNR	50	63.5	8.5	9.5
U-50658 CNR	50	65	8	9
U-50658.5 CNR	50	65	8.5	9.5
U-507010 CNR	50	70	10	11
U-507512 CNR	50	75	12	13
U-507515 CNR	50	75	15	16
U-507811.5 CNR	50	78	11.5	12.5
U-50.869.859.52 CNR	50.8	69.85	9.52	10.52
U-52699 CNR	52	69	9	10
U-52778 CNR	52	77	8	9
U-53.9763.54.76 CNR	53.97	63.5	4.76	5.76
U-547812 CNR	54	78	12	13
U-557812 CNR	55	78	12	13
U-558014 CNR	55	80	14	15
U-55.1678.1612.7 CNR	55.16	78.16	12.7	13.7
U-566610 CNR	56	66	10	11
U-567111.5 CNR	56	71	11.5	12.5
U-57.1576.212.19 CNR	57.15	76.2	12.19	13.19
U-57.1576.214 CNR	57.15	76.2	14	15
U-57.276.514 CNR	57.2	76.5	14	15
U-57.9477.7912.7 CNR	57.94	77.79	12.7	13.7
U-58728 CNR	58	72	8	9
U-587512 CNR	58	75	12	13
U-587810 CNR	58	78	10	11
U-587812 CNR	58	78	12	13
U-587814 CNR	58	78	14	15
U-5878.513 CNR	58	78.5	13	14
U-58.4278.4213.5 CNR	58.42	78.42	13.5	14.5
U-597912 CNR	59	79	12	13
U-606813 CNR	60	68	13	14
U-607010 CNR	60	70	10	11
U-607512 CNR	60	75	12	13
U-608010 CNR	60	80	10	11
U-608012 CNR	60	80	12	13
U-608013 CNR	60	80	13	14
U-608014 CNR	60	80	14	15
U-608015 CNR	60	80	15	16
U-608015.5 CNR	60	80	15.5	16.5
U-608016 CNR	60	80	16	17
U-60.276.29.7 CNR	60.2	76.2	9.7	10.7
U-637825 CNR	63	78	25	26
U-63.576.19.3 CNR	63.5	76.1	9.3	10.3
U-63.582.5512.7 CNR	63.5	82.55	12.7	13.7
U-63.588.913.5 CNR	63.5	88.9	13.5	14.5
U-658512 CNR	65	85	12	13
U-659512 CNR	65	95	12	13
U-65.0880.158 CNR	65.08	80.15	8	9
U-678612 CNR	67	86	12	13
U-678712 CNR	67	87	12	13
U-688311.5 CNR	68	83	11.5	12.5
U-69.988.912.7 CNR	69.9	88.9	12.7	13.7
U-70829 CNR	70	82	9	10
U-708214.3 CNR	70	82	14.3	15.3
U-70858.5 CNR	70	85	8.5	9.5
U-708512 CNR	70	85	12	13
U-70908 CNR	70	90	8	9
U-709014 CNR	70	90	14	15
U-7010015 CNR	70	100	15	16
U-7510010 CNR	75	100	10	11
U-7510015 CNR	75	100	15	16
U-76.288.97.14 CNR	76.2	88.9	7.14	8.14
U-76.288.98.5 CNR	76.2	88.9	8.5	9.5
U-76.295.259.52 CNR	76.2	95.25	9.52	10.52
U-76.2101.616.5 CNR	76.2	101.6	16.5	17.5
U-7710012 CNR	77	100	12	13
U-78868 CNR	78	86	8	9
U-788613 CNR	78	86	13	14
U-788613.5 CNR	78	86	13.5	14.5
U-788814.5 CNR	78	88	14.5	15.5
U-809514 CNR	80	95	14	15
U-801008.5 CNR	80	100	8.5	9.5
U-8010012 CNR	80	100	12	13
U-8010012.5 CNR	80	100	12.5	13.5
U-8010013 CNR	80	100	13	14
U-8010014 CNR	80	100	14	15
U-8010015 CNR	80	100	15	16
U-8010015.7 CNR	80	100	15.7	16.7
U-8010016 CNR	80	100	16	17
U-8010210 CNR	80	102	10	11
U-8011016 CNR	80	110	16	17
U-82968 CNR	82	96	8	9
U-8210013 CNR	82	100	13	14
U-82101.610 CNR	82	101.6	10	11
U-821029.5 CNR	82	102	9.5	10.5
U-8210210 CNR	82	102	10	11
U-82.55101.68 CNR	82.55	101.6	8	9
U-82.55101.611.9 CNR	82.55	101.6	11.9	12.9
U-82.55101.612 CNR	82.55	101.6	12	13
U-82.55101.612.7 CNR	82.55	101.6	12.7	13.7
U-82.55107.9512.7 CNR	82.55	107.95	12.7	13.7
U-82.56101.613 CNR	82.56	101.6	13	14
U-83101.612.5 CNR	83	101.6	12.5	13.5
U-83.18101.613.3 CNR	83.18	101.6	13.3	14.3
U-859312 CNR	85	93	12	13
U-8510510 CNR	85	105	10	11
U-8510512 CNR	85	105	12	13
U-85105.612 CNR	85	105.6	12	13
U-8511010 CNR	85	110	10	11
U-8511515 CNR	85	115	15	16
U-85.55107.9512.7 CNR	85.55	107.95	12.7	13.7
U-8610410 CNR	86	104	10	11
U-8610613 CNR	86	106	13	14
U-879812 CNR	87	98	12	13
U-8811519.5 CNR	88	115	19.5	20.5
U-88.9114.312.7 CNR	88.9	114.3	12.7	13.7
U-8910810 CNR	89	108	10	11
U-9010011 CNR	90	100	11	12
U-901026 CNR	90	102	6	7
U-9010412 CNR	90	104	12	13
U-901058.5 CNR	90	105	8.5	9.5
U-901059.1 CNR	90	105	9.1	10.1
U-9010515 CNR	90	105	15	16
U-9011010 CNR	90	110	10	11
U-9011013 CNR	90	110	13	14
U-9011015 CNR	90	110	15	16
U-9011515 CNR	90	115	15	16
U-91.94111.1212.7 CNR	91.94	111.12	12.7	13.7
U-9511211.2 CNR	95	112	11.2	12.2
U-9511512 CNR	95	115	12	13
U-9511515 CNR	95	115	15	16
U-95.25114.315.87 CNR	95.25	114.3	15.87	16.87
U-9710513 CNR	97	105	13	14
U-9710513.5 CNR	97	105	13.5	14.5
U-9710714.5 CNR	97	107	14.5	15.5
U-9811511.5 CNR	98	115	11.5	12.5
U-9812520 CNR	98	125	20	21
U-9812521 CNR	98	125	21	22
U-9912514 CNR	99	125	14	15
U-10012010 CNR	100	120	10	11
U-10012010.5 CNR	100	120	10.5	11.5
U-10012012 CNR	100	120	12	13
U-10012012.5 CNR	100	120	12.5	13.5
U-10012214.5 CNR	100	122	14.5	15.5
U-10012510 CNR	100	125	10	11
U-10012514.5 CNR	100	125	14.5	15.5
U-10012515 CNR	100	125	15	16
U-10012517.7 CNR	100	125	17.7	18.7
U-10012518.5 CNR	100	125	18.5	19.5
U-10012519 CNR	100	125	19	20
U-10012520 CNR	100	125	20	21
U-10012521 CNR	100	125	21	22
U-10013012 CNR	100	130	12	13
U-10013217 CNR	100	132	17	18
U-101.6120.6512.5 CNR	101.6	120.65	12.5	13.5
U-101.612712.7 CNR	101.6	127	12.7	13.7
U-101.612719.05 CNR	101.6	127	19.05	20.05
U-10212520 CNR	102	125	20	21
U-10312712 CNR	103	127	12	13
U-10312713 CNR	103	127	13	14
U-103130.516 CNR	103	130.5	16	17
U-10313515 CNR	103	135	15	16
U-103.8127.7513 CNR	103.8	127.75	13	14
U-10412520 CNR	104	125	20	21
U-10414020 CNR	104	140	20	21
U-10511312 CNR	105	113	12	13
U-10512513 CNR	105	125	13	14
U-10512515 CNR	105	125	15	16
U-10513015 CNR	105	130	15	16
U-10513020 CNR	105	130	20	21
U-10712511.5 CNR	107	125	11.5	12.5
U-107.9512712.7 CNR	107.95	127	12.7	13.7
U-11012214 CNR	110	122	14	15
U-11012810 CNR	110	128	10	11
U-11013015 CNR	110	130	15	16
U-11013512 CNR	110	135	12	13
U-11013521 CNR	110	135	21	22
U-11013715 CNR	110	137	15	16
U-11014015 CNR	110	140	15	16
U-11014018.5 CNR	110	140	18.5	19.5
U-11014819 CNR	110	148	19	20
U-11015017 CNR	110	150	17	18
U-11015520 CNR	110	155	20	21
U-11213515 CNR	112	135	15	16
U-114.314014.5 CNR	114.3	140	14.5	15.5
U-114.3152.415.6 CNR	114.3	152.4	15.6	16.6
U-115127.76.35 CNR	115	127.7	6.35	7.35
U-11513513 CNR	115	135	13	14
U-11513516.5 CNR	115	135	16.5	17.5
U-11514020.5 CNR	115	140	20.5	21.5
U-11612614.5 CNR	116	126	14.5	15.5
U-11812613 CNR	118	126	13	14
U-11812614 CNR	118	126	14	15
U-12014012 CNR	120	140	12	13
U-12014015 CNR	120	140	15	16
U-12015015 CNR	120	150	15	16
U-12015026 CNR	120	150	26	27
U-122.814619 CNR	122.8	146	19	20
U-123.2514619 CNR	123.25	146	19	20
U-12513312 CNR	125	133	12	13
U-12515013 CNR	125	150	13	14
U-12516520 CNR	125	165	20	21
U-12713512 CNR	127	135	12	13
U-127146.0512.7 CNR	127	146.05	12.7	13.7
U-12714712.8 CNR	127	147	12.8	13.8
U-12715221 CNR	127	152	21	22
U-127152.412.7 CNR	127	152.4	12.7	13.7
U-127152.420 CNR	127	152.4	20	21
U-13015015 CNR	130	150	15	16
U-13015417 CNR	130	154	17	18
U-13015617 CNR	130	156	17	18
U-13016018 CNR	130	160	18	19
U-13116015 CNR	131	160	15	16
U-133.35152.417.5 CNR	133.35	152.4	17.5	18.5
U-133.35152.419.05 CNR	133.35	152.4	19.05	20.05
U-13514514.5 CNR	135	145	14.5	15.5
U-13516018 CNR	135	160	18	19
U-13516018.2 CNR	135	160	18.2	19.2
U-13516018.3 CNR	135	160	18.3	19.3
U-13516018.5 CNR	135	160	18.5	19.5
U-13516020 CNR	135	160	20	21
U-13516525 CNR	135	165	25	26
U-13517520 CNR	135	175	20	21
U-136.52152.47.93 CNR	136.52	152.4	7.93	8.93
U-13815312 CNR	138	153	12	13
U-138.4152.47.5 CNR	138.4	152.4	7.5	8.5
U-14016013 CNR	140	160	13	14
U-14016015.3 CNR	140	160	15.3	16.3
U-14016016 CNR	140	160	16	17
U-14016017.2 CNR	140	160	17.2	18.2
U-14017018 CNR	140	170	18	19
U-14017018.7 CNR	140	170	18.7	19.7
U-14017019.3 CNR	140	170	19.3	20.3
U-14018015 CNR	140	180	15	16
U-14021020 CNR	140	210	20	21
U-14315113 CNR	143	151	13	14
U-14515312 CNR	145	153	12	13
U-1451609.2 CNR	145	160	9.2	10.2
U-15017514.5 CNR	150	175	14.5	15.5
U-15017520 CNR	150	175	20	21
U-15017521 CNR	150	175	21	22
U-15018018 CNR	150	180	18	19
U-15018019.5 CNR	150	180	19.5	20.5
U-15018022 CNR	150	180	22	23
U-15018025 CNR	150	180	25	26
U-15020025 CNR	150	200	25	26
U-15216012 CNR	152	160	12	13
U-152.4184.1518.5 CNR	152.4	184.15	18.5	19.5
U-15516514.5 CNR	155	165	14.5	15.5
U-15518020 CNR	155	180	20	21
U-15518024 CNR	155	180	24	25
U-156.43177.813.7 CNR	156.43	177.8	13.7	14.7
U-16018520 CNR	160	185	20	21
U-16019016 CNR	160	190	16	17
U-16019018 CNR	160	190	18	19
U-16019025 CNR	160	190	25	26
U-16020015 CNR	160	200	15	16
U-16020025 CNR	160	200	25	26
U-16520020 CNR	165	200	20	21
U-16520022 CNR	165	200	22	23
U-165.1203.221 CNR	165.1	203.2	21	22
U-165.520017 CNR	165.5	200	17	18
U-16620125 CNR	166	201	25	26
U-168.320023.5 CNR	168.3	200	23.5	24.5
U-168.3211.525 CNR	168.3	211.5	25	26
U-17019015 CNR	170	190	15	16
U-17020015 CNR	170	200	15	16
U-17020016.5 CNR	170	200	16.5	17.5
U-17020020 CNR	170	200	20	21
U-17020023 CNR	170	200	23	24
U-17117914 CNR	171	179	14	15
U-174.520017 CNR	174.5	200	17	18
U-17518514.5 CNR	175	185	14.5	15.5
U-17519915 CNR	175	199	15	16
U-17520015 CNR	175	200	15	16
U-18018812 CNR	180	188	12	13
U-18021013 CNR	180	210	13	14
U-18021019 CNR	180	210	19	20
U-18022016 CNR	180	220	16	17
U-18120816.3 CNR	181	208	16.3	17.3
U-181.620816.5 CNR	181.6	208	16.5	17.5
U-184.15203.212.7 CNR	184.15	203.2	12.7	13.7
U-184.1521518 CNR	184.15	215	18	19
U-18622425 CNR	186	224	25	26
U-19022015 CNR	190	220	15	16
U-19022018 CNR	190	220	18	19
U-19022020 CNR	190	220	20	21
U-19022022 CNR	190	220	22	23
U-19022526 CNR	190	225	26	27
U-190.5222.2515.87 CNR	190.5	222.25	15.87	16.87
U-19522518 CNR	195	225	18	19
U-19522523 CNR	195	225	23	24
U-19620614.5 CNR	196	206	14.5	15.5
U-196.85228.615.87 CNR	196.85	228.6	15.87	16.87
U-197240.225.5 CNR	197	240.2	25.5	26.5
U-20021213.5 CNR	200	212	13.5	14.5
U-20023011 CNR	200	230	11	12
U-20023014 CNR	200	230	14	15
U-203.2228.619 CNR	203.2	228.6	19	20
U-209.6228.612.7 CNR	209.6	228.6	12.7	13.7
U-21023520 CNR	210	235	20	21
U-21024015 CNR	210	240	15	16
U-21025020 CNR	210	250	20	21
U-215.9247.6516 CNR	215.9	247.65	16	17
U-21825021 CNR	218	250	21	22
U-219.07260.3730 CNR	219.07	260.37	30	31
U-219.07269.8738 CNR	219.07	269.87	38	39
U-22023014.5 CNR	220	230	14.5	15.5
U-22025012.3 CNR	220	250	12.3	13.3
U-22025015 CNR	220	250	15	16
U-22025018 CNR	220	250	18	19
U-22025022 CNR	220	250	22	23
U-22025023 CNR	220	250	23	24
U-22025222 CNR	220	252	22	23
U-22025520 CNR	220	255	20	21
U-22025522 CNR	220	255	22	23
U-22025523.5 CNR	220	255	23.5	24.5
U-22026016 CNR	220	260	16	17
U-22325820 CNR	223	258	20	21
U-22326920.5 CNR	223	269	20.5	21.5
U-223.525819 CNR	223.5	258	19	20
U-22425919.5 CNR	224	259	19.5	20.5
U-22525018 CNR	225	250	18	19
U-22526018.2 CNR	225	260	18.2	19.2
U-22527540 CNR	225	275	40	41
U-23025010 CNR	230	250	10	11
U-234.225016.5 CNR	234.2	250	16.5	17.5
U-234.952549.52 CNR	234.95	254	9.52	10.52
U-23527520 CNR	235	275	20	21
U-244.5324.9436 CNR	244.5	324.94	36	37
U-24525514.5 CNR	245	255	14.5	15.5
U-24527015 CNR	245	270	15	16
U-24727019 CNR	247	270	19	20
U-25028010 CNR	250	280	10	11
U-25028019 CNR	250	280	19	20
U-25028020 CNR	250	280	20	21
U-25028022 CNR	250	280	22	23
U-25028025 CNR	250	280	25	26
U-260.35279.412.7 CNR	260.35	279.4	12.7	13.7
U-27030016 CNR	270	300	16	17
U-27030020.5 CNR	270	300	20.5	21.5
U-27031022 CNR	270	310	22	23
U-27032022 CNR	270	320	22	23
U-273.05323.8538 CNR	273.05	323.85	38	39
U-27430525 CNR	274	305	25	26
U-27830513 CNR	278	305	13	14
U-279.4292.114.28 CNR	279.4	292.1	14.28	15.28
U-279.4304.812.7 CNR	279.4	304.8	12.7	13.7
U-28031015 CNR	280	310	15	16
U-280.98300.0312.7 CNR	280.98	300.03	12.7	13.7
U-285.75304.89.52 CNR	285.75	304.8	9.52	10.52
U-298.45317.59.52 CNR	298.45	317.5	9.52	10.52
U-29932926 CNR	299	329	26	27
U-30033015 CNR	300	330	15	16
U-32035020 CNR	320	350	20	21
U-32035025 CNR	320	350	25	26
U-32036022.5 CNR	320	360	22.5	23.5
U-32133612.8 CNR	321	336	12.8	13.8
U-323.85374.6535 CNR	323.85	374.65	35	36
U-323.85374.6538 CNR	323.85	374.65	38	39
U-32536320 CNR	325	363	20	21
U-33036020 CNR	330	360	20	21
U-33037020 CNR	330	370	20	21
U-33536520 CNR	335	365	20	21
U-35038025 CNR	350	380	25	26
U-35039035 CNR	350	390	35	36
U-35040025.4 CNR	350	400	25.4	26.4
U-355.6406.438 CNR	355.6	406.4	38	39
U-36038515 CNR	360	385	15	16
U-36040021 CNR	360	400	21	22
U-36041030 CNR	360	410	30	31
U-36840024 CNR	368	400	24	25
U-37040022 CNR	370	400	22	23
U-37040025 CNR	370	400	25	26
U-37040030 CNR	370	400	30	31
U-377.82425.4519.5 CNR	377.82	425.45	19.5	20.5
U-38042018 CNR	380	420	18	19
U-386.540714.5 CNR	386.5	407	14.5	15.5
U-398.243415 CNR	398.2	434	15	16
U-40043025 CNR	400	430	25	26
U-406.4457.236 CNR	406.4	457.2	36	37
U-406.4457.238 CNR	406.4	457.2	38	39
U-45048016 CNR	450	480	16	17
U-45048616 CNR	450	486	16	17
U-457.250838 CNR	457.2	508	38	39
U-457.2522.345 CNR	457.2	522.3	45	46
U-47053030 CNR	470	530	30	31
U-48051015 CNR	480	510	15	16
U-50054025 CNR	500	540	25	26
U-520.555928 CNR	520.5	559	28	29
U-54058020 CNR	540	580	20	21
U-56060028 CNR	560	600	28	29
U-596.9622.319 CNR	596.9	622.3	19	20
U-63466020 CNR	634	660	20	21
U-669.92711.220 CNR	669.92	711.2	20	21
U-673.1711.225.4 CNR	673.1	711.2	25.4	26.4
U-71075040 CNR	710	750	40	41
U-73376121 CNR	733	761	21	22
U-76080040 CNR	760	800	40	41
U-77380021 CNR	773	800	21	22
U-774.7800.119.05 CNR	774.7	800.1	19.05	20.05
U-80085027 CNR	800	850	27	28
U-825.5850.922.22 CNR	825.5	850.9	22.22	23.22
U-838.2863.619.05 CNR	838.2	863.6	19.05	20.05
U-889914.419.05 CNR	889	914.4	19.05	20.05
U-917.57942.9722.22 CNR	917.57	942.97	22.22	23.22
U-1074110020 CNR	1074	1100	20	21

Technical drawing and installation parameters of the CNR symmetrical seals

This technical drawing defines the dimensions and geometric variables required for the correct selection and snap-on installation of the CNR symmetrical seal, a compact one-piece profile with reversible geometry, suitable for both rod and piston. It shows the critical dimensions linked to the specification tables, such as the inside diameter (Ød), the outside diameter (ØD) and the seal cross-section width (b), together with the housing groove width (B), its depth (E), the groove root fillet radius (rs 0.40) and the 20° lead-in angle. Working to these dimensions ensures accurate positioning, installation without distorting the profile and optimum static and dynamic sealing performance in double-acting applications at medium and high pressures.

Three-dimensional view and components of the CNR symmetrical seals

This 3D illustration shows the basic structure of the CNR symmetrical seal in detail. You can clearly see its characteristic element: a one-piece elastomer body with symmetrical sealing lips, whose radial interference keeps them in contact with the sliding surface even at low pressure. Its compact design and reversible geometry allow it to be used either as a rod seal or as a piston seal, providing effective sealing, good adaptability to housing tolerances and simple snap-on installation.

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