Junta de pistón HPO2 con anillo deslizante de PTFE bronce de bordes biselados y junta tórica energizadora negra.

Piston seal HPO2

DESCRIPTION

HPO2 is a double-acting sealing set for hydraulic pistons, comprising a PTFE profile ring and a preloading O-ring. It provides high pressure, abrasion and temperature resistance, with low friction and stick-slip-free operation.

Assembly

Install in a clean, rounded and burr-free groove, avoiding sharp edges that could damage the PTFE or O-ring. Lubricate with a compatible fluid, assemble without twisting and check seating and surface finish. Keep clean and periodically inspect for wear, leakage and damage.

ADVANTAGES

Seals pistons subjected to pressure from both sides.
Enhanced operating reliability under demanding operating parameters.
Prevents fluid blow-by during rapid load changes thanks to pressure-activation grooves.
High pressure resistance and good dimensional stability.
High abrasion resistance and good thermal conductivity.
Low friction and stick-slip-free operation.
Maximum operating pressure of 40 MPa.
Maximum sliding speed of 5 m/s.
Suitable for hydraulic oils, mineral greases and compatible fluids according to the material combination.

MATERIALS

The HPO2 profile is manufactured with a bronze-filled PTFE sealing element with a hardness of 60 Shore D and an energizing O-ring in NBR or FKM with a hardness between 70 and 80 Shore A.

TECHNICAL DATA

NO	ØD	Ød	B	C	R1
JP-127.12.2 HPO2	12	7.1	2.2	3	0.4
JP-149.12.2 HPO2	14	9.1	2.2	3	0.4
JP-157.53.2 HPO2	15	7.5	3.2	4.5	0.6
JP-168.53.2 HPO2	16	8.5	3.2	4.5	0.6
JP-1810.53.2 HPO2	18	10.5	3.2	4.5	0.6
JP-1813.12.2 HPO2	18	13.1	2.2	3	0.4
JP-2012.53.2 HPO2	20	12.5	3.2	4.5	0.6
JP-25144.2 HPO2	25	14	4.2	6	1
JP-2517.53.2 HPO2	25	17.5	3.2	4.5	0.6
JP-3019.33.2 HPO2	30	19.3	3.2	6	1
JP-3022.53.2 HPO2	30	22.5	3.2	4.5	0.6
JP-31.723.473.2 HPO2	31.7	23.47	3.2	5	0.7
JP-32214.2 HPO2	32	21	4.2	6	1
JP-3224.53.2 HPO2	32	24.5	3.2	4.5	0.6
JP-3527.53.2 HPO2	35	27.5	3.2	4.5	0.6
JP-3628.53.2 HPO2	36	28.5	3.2	4.5	0.6
JP-38.130.63.2 HPO2	38.1	30.6	3.2	4.5	0.6
JP-40294.2 HPO2	40	29	4.2	6	1
JP-4029.54.2 HPO2	40	29.5	4.2	6	1
JP-4032.53.2 HPO2	40	32.5	3.2	4.5	0.6
JP-42314.2 HPO2	42	31	4.2	6	1
JP-45344.2 HPO2	45	34	4.2	6	1
JP-4637.73.2 HPO2	46	37.7	3.2	5	0.7
JP-48374.2 HPO2	48	37	4.2	6	1
JP-50.839.84.2 HPO2	50.8	39.8	4.2	6	1
JP-5034.56.3 HPO2	50	34.5	6.3	8	1.3
JP-50394.2 HPO2	50	39	4.2	6	1
JP-5539.56.3 HPO2	55	39.5	6.3	8	1.3
JP-55444.2 HPO2	55	44	4.2	6	1
JP-56454.2 HPO2	56	45	4.2	6	1
JP-56466.3 HPO2	56	46	6.3	6	1
JP-6044.56.3 HPO2	60	44.5	6.3	8	1.3
JP-60494.2 HPO2	60	49	4.2	6	1
JP-62514.2 HPO2	62	51	4.2	6	1
JP-63.5563.2 HPO2	63.5	56	3.2	4.5	0.6
JP-63428.1 HPO2	63	42	8.1	10.5	1.8
JP-6347.56.3 HPO2	63	47.5	6.3	8	1.3
JP-63524.2 HPO2	63	52	4.2	6	1
JP-6355.53.2 HPO2	63	55.5	3.2	4.5	0.6
JP-6549.56.3 HPO2	65	49.5	6.3	8	1.3
JP-65544.2 HPO2	65	54	4.2	6	1
JP-68574.2 HPO2	68	57	4.2	6	1
JP-7054.56.3 HPO2	70	54.5	6.3	8	1.3
JP-70594.2 HPO2	70	59	4.2	6	1
JP-7559.56.3 HPO2	75	59.5	6.3	8	1.3
JP-75644.2 HPO2	75	64	4.2	6	1
JP-76654.2 HPO2	76	65	4.2	6	1
JP-80598.1 HPO2	80	59	8.1	10.5	1.8
JP-8064.56.3 HPO2	80	64.5	6.3	8	1.3
JP-80694.2 HPO2	80	69	4.2	6	1
JP-82.667.16.3 HPO2	82.6	67.1	6.3	8	1.3
JP-85648.1 HPO2	85	64	8.1	10.5	1.8
JP-8569.56.3 HPO2	85	69.5	6.3	8	1.3
JP-85744.2 HPO2	85	74	4.2	6	1
JP-90698.1 HPO2	90	69	8.1	10.5	1.8
JP-9074.56.3 HPO2	90	74.5	6.3	8	1.3
JP-90794.2 HPO2	90	79	4.2	6	1
JP-9579.56.3 HPO2	95	79.5	6.3	8	1.3
JP-100798.1 HPO2	100	79	8.1	10.5	1.8
JP-10084.56.3 HPO2	100	84.5	6.3	8	1.3
JP-100894.2 HPO2	100	89	4.2	6	1
JP-10589.56.3 HPO2	105	89.5	6.3	8	1.3
JP-110898.1 HPO2	110	89	8.1	10.5	1.8
JP-11094.56.3 HPO2	110	94.5	6.3	8	1.3
JP-110994.2 HPO2	110	99	4.2	6	1
JP-115948.1 HPO2	115	94	8.1	10.5	1.8
JP-11599.56.3 HPO2	115	99.5	6.3	8	1.3
JP-120998.1 HPO2	120	99	8.1	10.5	1.8
JP-120104.56.3 HPO2	120	104.5	6.3	8	1.3
JP-1251048.1 HPO2	125	104	8.1	10.5	1.8
JP-125109.56.3 HPO2	125	109.5	6.3	8	1.3
JP-1251144.2 HPO2	125	114	4.2	6	1
JP-127111.56.3 HPO2	127	111.5	6.3	8	1.3
JP-1301098.1 HPO2	130	109	8.1	10.5	1.8
JP-130114.56.3 HPO2	130	114.5	6.3	8	1.3
JP-1401198.1 HPO2	140	119	8.1	10.5	1.8
JP-140124.56.3 HPO2	140	124.5	6.3	8	1.3
JP-1451248.1 HPO2	145	124	8.1	10.5	1.8
JP-1501298.1 HPO2	150	129	8.1	10.5	1.8
JP-152.4131.48.1 HPO2	152.4	131.4	8.1	10.5	1.8
JP-1551348.1 HPO2	155	134	8.1	10.5	1.8
JP-1601398.1 HPO2	160	139	8.1	10.5	1.8
JP-1651448.1 HPO2	165	144	8.1	10.5	1.8
JP-1701498.1 HPO2	170	149	8.1	10.5	1.8
JP-1801598.1 HPO2	180	159	8.1	10.5	1.8
JP-1851648.1 HPO2	185	164	8.1	10.5	1.8
JP-1881678.1 HPO2	188	167	8.1	10.5	1.8
JP-1901698.1 HPO2	190	169	8.1	10.5	1.8
JP-1981778.1 HPO2	198	177	8.1	10.5	1.8
JP-2001798.1 HPO2	200	179	8.1	10.5	1.8
JP-200184.56.3 HPO2	200	184.5	6.3	8	1.3
JP-203.2182.28.1 HPO2	203.2	182.2	8.1	10.5	1.8
JP-2051848.1 HPO2	205	184	8.1	10.5	1.8
JP-2101898.1 HPO2	210	189	8.1	10.5	1.8
JP-2151948.1 HPO2	215	194	8.1	10.5	1.8
JP-2201998.1 HPO2	220	199	8.1	10.5	1.8
JP-2252048.1 HPO2	225	204	8.1	10.5	1.8
JP-225209.56.3 HPO2	225	209.5	6.3	8	1.3
JP-2302098.1 HPO2	230	209	8.1	10.5	1.8
JP-2402198.1 HPO2	240	219	8.1	10.5	1.8
JP-2452248.1 HPO2	245	224	8.1	10.5	1.8
JP-2502298.1 HPO2	250	229	8.1	10.5	1.8
JP-2542338.1 HPO2	254	233	8.1	10.5	1.8
JP-2602398.1 HPO2	260	239	8.1	10.5	1.8
JP-2652448.1 HPO2	265	244	8.1	10.5	1.8
JP-266.7245.78.1 HPO2	266.7	245.7	8.1	10.5	1.8
JP-2702498.1 HPO2	270	249	8.1	10.5	1.8
JP-2752548.1 HPO2	275	254	8.1	10.5	1.8
JP-2802598.1 HPO2	280	259	8.1	10.5	1.8
JP-3002798.1 HPO2	300	279	8.1	10.5	1.8
JP-304.8283.88.1 HPO2	304.8	283.8	8.1	10.5	1.8
JP-3052848.1 HPO2	305	284	8.1	10.5	1.8
JP-3102898.1 HPO2	310	289	8.1	10.5	1.8
JP-320295.58.1 HPO2	320	295.5	8.1	12	1.8
JP-3202998.1 HPO2	320	299	8.1	10.5	1.8
JP-330305.58.1 HPO2	330	305.5	8.1	12	1.8
JP-340315.58.1 HPO2	340	315.5	8.1	12	1.8
JP-3403198.1 HPO2	340	319	8.1	10.5	1.8
JP-350325.58.1 HPO2	350	325.5	8.1	12	1.8
JP-360335.58.1 HPO2	360	335.5	8.1	12	1.8
JP-370345.58.1 HPO2	370	345.5	8.1	12	1.8
JP-380355.58.1 HPO2	380	355.5	8.1	12	1.8
JP-390365.58.1 HPO2	390	365.5	8.1	12	1.8
JP-400375.58.1 HPO2	400	375.5	8.1	12	1.8
JP-420395.58.1 HPO2	420	395.5	8.1	12	1.8
JP-430405.58.1 HPO2	430	405.5	8.1	12	1.8
JP-450425.58.1 HPO2	450	425.5	8.1	12	1.8
JP-460435.58.1 HPO2	460	435.5	8.1	12	1.8
JP-480455.58.1 HPO2	480	455.5	8.1	12	1.8
JP-485460.58.1 HPO2	485	460.5	8.1	12	1.8
JP-500475.58.1 HPO2	500	475.5	8.1	12	1.8
JP-520495.58.1 HPO2	520	495.5	8.1	12	1.8
JP-530505.58.1 HPO2	530	505.5	8.1	12	1.8
JP-540515.58.1 HPO2	540	515.5	8.1	12	1.8

TECHNICAL DRAWING AND INSTALLATION PARAMETERS FOR THE HPO2 PISTON SEAL

This technical diagram sets out the dimensions and geometric parameters needed to select and install the HPO2 piston seal correctly, a two-piece assembly consisting of a PTFE profile ring and a pre-load O-ring, both housed in the piston groove. It shows the dimensions linked to the size table, the outside diameter (ØD), the groove root diameter (Ød) and the groove width (B), together with the radial clearance between piston and bore (E), which governs the risk of extrusion at high pressure. The groove entry edges are radiused to r ≤ 0.30 mm and the root to r ≤ 0.20 mm, and the piston is finished with a 20° lead-in chamfer, all of it free from burrs. Meeting these dimensions ensures correct O-ring pre-load, twist-free installation and stable sealing performance in diameters from 10 to 2500 mm.

THREE-DIMENSIONAL VIEW AND COMPONENTS OF THE HPO2 PISTON SEAL

This 3D illustration shows the structure of the HPO2 piston seal. As a two-piece assembly, it comprises a bronze-filled PTFE sealing ring at 60 Shore D, which runs against the cylinder bore, and an energising O-ring in NBR or FKM at 70 to 80 Shore A, seated beneath it at the groove root. The O-ring does not run against the bore, its role is to hold the PTFE ring steadily against the sliding surface and to compensate for wear and for temperature variation. This division of duties gives the profile its performance, the PTFE provides low friction, stick-slip free running, abrasion resistance and good thermal conductivity, and the elastomer provides the closing force required even at low pressure. The assembly seals on both sides and withstands up to 40 MPa at sliding speeds of up to 5 m/s.

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