Rod seal UIP

Description

The UIP is a hydraulic U-profile rod seal with an asymmetrical, single-acting design, manufactured in polyurethane. The shortened inner lip and the recessed sealing lip distribute the contact progressively, while the tight fit on the outer diameter ensures static sealing inside the groove. It works under one-sided pressure load and uses the system pressure itself to reinforce the sealing effect.

Assembly

It is fitted in a closed, machined groove. Chamfer the edges of the housing and the rod according to the installation drawing, remove any burrs and clean the housing before fitting the seal. Do not pull the seal over sharp edges, threads or keyways, use a mounting sleeve if necessary. Lubricate the rod with oil or grease before assembly.

Advantages

Materials

The UIP is manufactured in 92 to 95 Shore A polyurethane (PU), a material that combines high mechanical and wear resistance with excellent elastic recovery, allowing it to work at high pressures without extrusion. It is compatible with hydraulic oils according to DIN 51524 parts 1 to 3, lubricating oils, mineral-based greases and HFA, HFB and HFC fire-resistant hydraulic fluids according to VDMA 24317.

Technical data

NO.	Ød	ØD	b	B	C
U-25.52.6 UIP	2	5.5	2.6	3.1	2
U-4126 UIP	4	12	6	7	4
U-4124.5 UIP	4	12	4.5	5	4
U-483 UIP	4	8	3	3.5	2
U-5104 UIP	5	10	4	4.5	2
U-6.3512.73.96 UIP	6.35	12.7	3.96	4.46	3
U-6124 UIP	6	12	4	4.5	3
U-813.23.1 UIP	8	13.2	3.1	3.6	2
U-8165.5 UIP	8	16	5.5	6.5	4
U-8144.5 UIP	8	14	4.5	5	3
U-8144 UIP	8	14	4	4.5	3
U-9.5216.53.96 UIP	9.52	16.5	3.96	4.46	3.5
U-9159 UIP	9	15	9	10	3
U-10144 UIP	10	14	4	4.5	2
U-10185.5 UIP	10	18	5.5	6.5	4
U-1013.62.3 UIP	10	13.6	2.3	2.8	2
U-10142 UIP	10	14	2	2.5	2
U-10164.5 UIP	10	16	4.5	5	3
U-12227.5 UIP	12	22	7.5	8.5	4.5
U-12184.5 UIP	12	18	4.5	5	3
U-12205.5 UIP	12	20	5.5	6.5	4
U-14184 UIP	14	18	4	4.5	2
U-14225.5 UIP	14	22	5.5	6.5	4
U-14.2820.634.76 UIP	14.28	20.63	4.76	5.76	3
U-14.2820.634.76 UIP	14.28	20.63	4.76	5.76	3
U-14193.5 UIP	14	19	3.5	4	2
U-15236.3 UIP	15	23	6.3	7.3	4
U-15.8722.224.76 UIP	15.87	22.22	4.76	5.76	3
U-15194 UIP	15	19	4	4.5	2
U-15224.3 UIP	15	22	4.3	4.8	3.5
U-16245 UIP	16	24	5	6	4
U-16245.5 UIP	16	24	5.5	6.5	4
U-16267 UIP	16	26	7	8	4.5
U-16235.5 UIP	16	23	5.5	6.5	3.5
U-1622.54.5 UIP	16	22.5	4.5	5	3
U-16225 UIP	16	22	5	6	3
U-1620.63.3 UIP	16	20.6	3.3	3.8	3
U-17.4623.814.76 UIP	17.46	23.81	4.76	5.26	3
U-18245 UIP	18	24	5	6	3
U-18255 UIP	18	25	5	6	3.5
U-18255.5 UIP	18	25	5.5	6.5	3.5
U-18264.5 UIP	18	26	4.5	5	4
U-18288.2 UIP	18	28	8.2	9.2	4.5
U-18254.5 UIP	18	25	4.5	5	3.5
U-18265.5 UIP	18	26	5.5	6.5	4
U-18244.2 UIP	18	24	4.2	4.7	3
U-19.0525.44.76 UIP	19.05	25.4	4.76	5.76	3
U-20306 UIP	20	30	6	7	4.5
U-20285.5 UIP	20	28	5.5	6.5	4
U-20308 UIP	20	30	8	9	4.5
U-20307 UIP	20	30	7	8	4.5
U-20285.8 UIP	20	28	5.8	6.8	4
U-22307 UIP	22	30	7	8	4
U-22308 UIP	22	30	8	9	4
U-22326 UIP	22	32	6	7	4.5
U-22305.7 UIP	22	30	5.7	6.7	4
U-22.4304.5 UIP	22.4	30	4.5	5	4
U-22.2231.756.35 UIP	22.22	31.75	6.35	7.35	4.5
U-22.2231.754.76 UIP	22.22	31.75	4.76	5.76	4.5
U-22305.3 UIP	22	30	5.3	6.3	4
U-22295 UIP	22	29	5	6	3.5
U-22305.5 UIP	22	30	5.5	6.5	4
U-23.8136.516.35 UIP	23.81	36.51	6.35	7.35	5
U-24348.5 UIP	24	34	8.5	9.5	4.5
U-24325.5 UIP	24	32	5.5	6.5	4
U-24.5304.4 UIP	24.5	30	4.4	4.9	2
U-25356 UIP	25	35	6	7	4.5
U-25358 UIP	25	35	8	9	4.5
U-25335.5 UIP	25	33	5.5	6.5	4
U-25326 UIP	25	32	6	7	3.5
U-25325.5 UIP	25	32	5.5	6.5	3.5
U-25376 UIP	25	37	6	7	5
U-25327 UIP	25	32	7	8	3.5
U-253310 UIP	25	33	10	11	4
U-25357 UIP	25	35	7	8	4.5
U-25.438.16.35 UIP	25.4	38.1	6.35	7.35	5
U-26.9936.516.35 UIP	26.99	36.51	6.35	7.35	4.5
U-28386 UIP	28	38	6	7	4.5
U-28387 UIP	28	38	7	8	4.5
U-28388 UIP	28	38	8	9	4.5
U-28365.7 UIP	28	36	5.7	6.7	4
U-28365.5 UIP	28	36	5.5	6.5	4
U-28368 UIP	28	36	8	9	4
U-2835.55 UIP	28	35.5	5	6	4
U-28365.3 UIP	28	36	5.3	6.3	4
U-30408 UIP	30	40	8	9	4.5
U-30428.5 UIP	30	42	8.5	9.5	5
U-30407 UIP	30	40	7	8	4.5
U-30385.7 UIP	30	38	5.7	6.7	4
U-30388 UIP	30	38	8	9	4
U-30386.3 UIP	30	38	6.3	7.3	4
U-30.1638.16.35 UIP	30.16	38.1	6.35	7.35	4
U-32427 UIP	32	42	7	8	4.5
U-32405.7 UIP	32	40	5.7	6.7	4
U-32408 UIP	32	40	8	9	4
U-32488 UIP	32	48	8	9	5.5
U-34447 UIP	34	44	7	8	4.5
U-35458 UIP	35	45	8	9	4.5
U-35457 UIP	35	45	7	8	4.5
U-354510 UIP	35	45	10	11	4.5
U-35438 UIP	35	43	8	9	4
U-35436 UIP	35	43	6	7	4
U-35.545.26 UIP	35.5	45.2	6	7	4.5
U-35.540.53.5 UIP	35.5	40.5	3.5	4	2
U-35456 UIP	35	45	6	7	4.5
U-35435.3 UIP	35	43	5.3	6.3	4
U-36468 UIP	36	46	8	9	4.5
U-364610 UIP	36	46	10	11	4.5
U-36445.7 UIP	36	44	5.7	6.7	4
U-36445.5 UIP	36	44	5.5	6.5	4
U-36467 UIP	36	46	7	8	4.5
U-36446 UIP	36	44	6	7	4
U-36448 UIP	36	44	8	9	4
U-37478 UIP	37	47	8	9	4.5
U-38.150.89.52 UIP	38.1	50.8	9.52	10.52	5
U-405010 UIP	40	50	10	11	4.5
U-40508 UIP	40	50	8	9	4.5
U-40488 UIP	40	48	8	9	4
U-40507 UIP	40	50	7	8	4.5
U-40485.4 UIP	40	48	5.4	6.4	4
U-40485.8 UIP	40	48	5.8	6.8	4
U-41.2750.85.56 UIP	41.27	50.8	5.56	6.56	4.5
U-455510 UIP	45	55	10	11	4.5
U-45557 UIP	45	55	7	8	4.5
U-45609 UIP	45	60	9	10	5.5
U-45607 UIP	45	60	7	8	5.5
U-45557.3 UIP	45	55	7.3	8.3	4.5
U-45556 UIP	45	55	6	7	4.5
U-456112 UIP	45	61	12	13	5.5
U-45628 UIP	45	62	8	9	5.5
U-45555.8 UIP	45	55	5.8	6.8	4.5
U-4756.39 UIP	47	56.3	9	10	4.5
U-506010 UIP	50	60	10	11	4.5
U-506510 UIP	50	65	10	11	5.5
U-50607 UIP	50	60	7	8	4.5
U-50628 UIP	50	62	8	9	5
U-50659 UIP	50	65	9	10	5.5
U-50607.5 UIP	50	60	7.5	8.5	4.5
U-50606 UIP	50	60	6	7	4.5
U-506511.5 UIP	50	65	11.5	12.5	5.5
U-556510 UIP	55	65	10	11	4.5
U-55657.3 UIP	55	65	7.3	8.3	4.5
U-557010 UIP	55	70	10	11	5.5
U-56688.5 UIP	56	68	8.5	9.5	5
U-567111.5 UIP	56	71	11.5	12.5	5.5
U-566610 UIP	56	66	10	11	4.5
U-607010 UIP	60	70	10	11	4.5
U-607012 UIP	60	70	12	13	4.5
U-607512 UIP	60	75	12	13	5.5
U-607011 UIP	60	70	11	12	4.5
U-60748 UIP	60	74	8	9	5
U-60728.5 UIP	60	72	8.5	9.5	5
U-608012 UIP	60	80	12	13	6
U-60707 UIP	60	70	7	8	4.5
U-63758.5 UIP	63	75	8.5	9.5	5
U-63736.5 UIP	63	73	6.5	7.5	4.5
U-63.576.29.52 UIP	63.5	76.2	9.52	10.52	5
U-6378.15.8 UIP	63	78.1	5.8	6.8	5.5
U-638312 UIP	63	83	12	13	6
U-657510 UIP	65	75	10	11	4.5
U-688012 UIP	68	80	12	13	5
U-69.8582.59.52 UIP	69.85	82.5	9.52	10.52	5
U-708012 UIP	70	80	12	13	4.5
U-708510 UIP	70	85	10	11	5.5
U-708512 UIP	70	85	12	13	5.5
U-70828.5 UIP	70	82	8.5	9.5	5
U-758512 UIP	75	85	12	13	4.5
U-75857.2 UIP	75	85	7.2	8.2	4.5
U-78888 UIP	78	88	8	9	4.5
U-809012 UIP	80	90	12	13	4.5
U-80928.5 UIP	80	92	8.5	9.5	5
U-80929.5 UIP	80	92	9.5	10.5	5
U-80907 UIP	80	90	7	8	4.5
U-859512 UIP	85	95	12	13	4.5
U-85957 UIP	85	95	7	8	4.5
U-851009 UIP	85	100	9	10	5.5
U-9010012 UIP	90	100	12	13	4.5
U-901028.5 UIP	90	102	8.5	9.5	5
U-9010512 UIP	90	105	12	13	5.5
U-9010511.5 UIP	90	105	11.5	12.5	5.5
U-9510512 UIP	95	105	12	13	4.5
U-9511513 UIP	95	115	13	14	6
U-10011014 UIP	100	110	14	15	4.5
U-10011512 UIP	100	115	12	13	5.5
U-10011510 UIP	100	115	10	11	5.5
U-10512012 UIP	105	120	12	13	5.5
U-10512010 UIP	105	120	10	11	5.5
U-11013014 UIP	110	130	14	15	6
U-12014014.6 UIP	120	140	14.6	15.6	6
U-1201359.5 UIP	120	135	9.5	10.5	5.5
U-12514512 UIP	125	145	12	13	6
U-13514512 UIP	135	145	12	13	4.5
U-14016014 UIP	140	160	14	15	6
U-15016013.5 UIP	150	160	13.5	14.5	4.5
U-15017015 UIP	150	170	15	16	6
U-15516512 UIP	155	165	12	13	4.5
U-16017012 UIP	160	170	12	13	4.5
U-18020011.5 UIP	180	200	11.5	12.5	6
U-19021015 UIP	190	210	15	16	6
U-22024015 UIP	220	240	15	16	6
U-24026015 UIP	240	260	15	16	6

Technical drawing and installation parameters of the UIP rod seal

This technical diagram defines the essential dimensions and geometric variables for the correct housing and installation of the UIP rod seal. It specifies the critical dimensions linked to the specification tables, such as the seal width (b), the groove width (B), the rod inner diameter (Ød) and the housing outer diameter (ØD). It also details the maximum groove bottom radius (r < 0.40 mm), the length of the lead-in chamfer (C) and its 20° angle. These parameters ensure a tight fit on the outer diameter to guarantee static sealing, allow progressive contact of the sealing lips and prevent damage to the profile during installation.

Three-dimensional view and components of the UIP rod seal

This 3D illustration details the basic structure of the UIP hydraulic rod seal. The diagram shows its characteristic elements: the polyurethane body with an asymmetrical U-profile, the asymmetrical sealing lips (with the shortened inner lip and a recessed sealing lip) and its compact design without a back-up ring. This geometry distributes the contact progressively for controlled friction, using the system pressure itself to reinforce both static and dynamic sealing.

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