Dpm/Tpm Double Acting Piston Seals Hydraulic Piston Compact Seal

DPM

Quantity:

Contact Now

1. Application and properties

DPM is a dual-action sealing and guiding component consisting of one elastic body, two retaining rings, and two guide rings. The elastic body can provide good sealing action dynamically and statically, the retaining rings prevent the elastic body from being squeezed into the sealing gap, and the guide rings guide the piston inside the cylinder and absorb radial forces.

It is mainly used for oil cylinders with low movement speeds, strict requirements for internal leakage, and limited installation space for piston seals, such as bulldozers, excavators, loaders, hydraulic gates, and agricultural machinery.

The outstanding feature of this seal is that the retaining rings, guide rings, and sealing components are installed in one groove, greatly saving installation space. It is usually used for oil cylinders with smaller diameters, and other sealing components are not required to be installed on the piston.

It is usually used for integral piston

2. Standard material

Guide ring: POM

O-Ring: NBR / FKM

Back-up ring: TPU Polymer

3. Working Conditions

Working Conditions

Diameter

Range

Pressure

Range

Temperature

Range°C

Speed

Medium

20～2000mm

0～35MPa

-30～100(NBR)

-20～160(FKM)

0.3m/s

Hydraulic oil,

flame retardant liquid,water

4. Related Dimensions

R=0.3～0.5; C=3～15. The specific value is selected according to the size of the section of the seal, and the remaining values are listed in the Installation Dimensions table.

5. Marking method

Mark with the dimension of installation groove

For example: The seal of standard100 (Part No. DPM393275) is marked as: DPM100×75×22.4×93.15×98×6.35

6. Installation Dimensions

Bore Dia.	Groove Size					Part No.	Bore Dia.	Groove Size					Part No.
D	d1	L1	d2	d3	L2		D	d1	L1	d2	d3	L2
25	15	12.5	22	24	4	DPM098059/1	115	90	22.4	108.1	113	6.35	DPM452354
25	16	13.5	22	24	2.1	DPM098062	115	97	22.5	111	114	3.6	DPM452384
30	17	15.4	26.5	28.5	6.35	DPM118066	120	95	22.4	113.1	118.1	6.35	DPM472374
30	21	13.5	27	29	2.1	DPM118078	120	106	22.5	116	119.4	5.2	DPM472417
32	22	12.5	29	31	4	DPM125086/2	125	100	25.4	118.1	123	6.35	DPM492393
32	22	15.5	28	31	2.6	DPM125086/1	125	103	26.5	121	124	5.1	DPM492405
32	22	16.4	28.5	30.5	6.35	DPM125086	125	105	25	120	123	6.35	DPM492413/1
35	25	15.5	31	34	2.6	DPM137098/1	125	105	25.4	119.1	123.3	6.35	DPM492413
35	25	16.4	31.4	33.5	6.35	DPM137098	125	108	26.5	121	124.4	7.2	DPM492421
40	24	18.4	35.4	38.5	6.35	DPM157094	130	105	25.4	123.1	128	6.35	DPM511413/1
40	26	15.5	36	39	2.6	DPM157102	130	105	25.4	122.6	127.5	9.5	DPM511413
40	30	12.5	36	38	4	DPM157118	135	110	25.4	128.1	133	6.35	DPM531433/1
40	30	16.4	35.4	38.5	6.35	DPM157118/1	135	110	25.4	127.6	132.5	9.5	DPM531433
40	32	15.5	36	39.4	3.2	DPM040032	140	115	25.4	133	138	6.35	DPM551452/1
45	29	18.4	40.4	43.5	6.35	DPM177114	140	115	25.4	132.6	137.5	9.5	DPM551452
45	31	15.5	41	44	2.6	DPM177122	140	118	26.5	136	139	5.1	DPM551464
45	35	16.4	40.4	43.5	6.35	DPM177137	140	123	26.5	136	139.4	7.2	DPM140123
45	37	15.5	41	44.4	3.2	DPM045037	145	120	25.4	138.3	143	6.35	DPM570472/1
50	34	18.4	45.4	48.5	6.35	DPM196113	145	120	25.4	137.6	142.5	9.5	DPM570472
50	34	20.5	46	49	3.1	DPM196113/1	150	125	25.4	143	148	6.35	DPM590492/1
50	38	20.5	46	49.4	4.2	DPM196146	150	125	25.4	142.6	147.5	9.5	DPM590492
55	39	18.4	50.36	53.5	6.35	DPM216153	150	128	26.5	146	149	5.1	DPM590504
55	39	20.5	51	54	3.1	DPM216153/1	150	133	26.5	146	149.4	7.2	DPM590518
60	44	18.4	55.4	58.5	6.35	DPM236173	155	130	25.4	148	153	6.35	DPM610511/1
60	44	20.5	56	59	3.1	DPM236173/1	155	130	25.4	147.6	152.5	9.5	DPM610511
60	48	20.5	56	59.4	4.2	DPM236186	160	130	25.4	153	157.5	6.35	DPM629511/1
63	47	18.4	58.4	61.5	6.35	DPM248185	160	130	25.4	152.6	157.5	9.5	DPM629511
63	47	19.4	58.4	61.5	6.35	DPM248185/1	160	130	25.4	152.6	157.5	9.5	DPM629531
63	47	20.5	59	62	3.1	DPM248185/2	160	138	26.5	156	159	5.1	DPM629543
63	51	20.5	59	62.4	4.2	DPM248199	160	143	26.5	156	159.4	7.2	DPM629558
63	53	12.5	60	62	4	DPM248208	165	140	25.4	157.6	162.5	9.5	DPM649551
65	49	20.5	61	64	3.1	DPM255192	170	145	25.4	161.7	167.1	12.7	DPM669570
65	50	18.4	60.4	63.5	6.35	DPM255196	170	148	26.5	166	169	5.1	DPM669581
70	50	22.4	64.2	68.3	6.35	DPM275196	175	150	25.4	166.7	172.1	12.7	DPM688590
70	54	20.5	66	69	3.1	DPM275212	180	150	35.4	173	177.9	6.35	DPM708590
70	55	20.5	66	68.5	5	DPM275216	180	155	25.4	171.7	177.1	12.7	DPM708610
70	58	20.5	66	69.4	4.2	DPM275228	180	163	26.5	176	179.4	7.2	DPM180163
75	55	22.4	69.2	73.3	6.35	DPM295216	185	160	25.4	176.7	182.1	12.7	DPM728629
75	59	20.5	71	74	3.1	DPM295196	190	165	25.4	181.7	187	12.7	DPM748649
80	60	22.4	74.15	78.3	6.35	DPM314236	195	170	25.4	186.7	192	12.7	DPM767669
80	62	22.5	76	79	3.6	DPM314244	200	170	35.4	193	198	6.35	DPM787669
80	65	20	76	78.5	5	DPM314255	200	175	25.4	191.6	197	12.7	DPM787688
80	66	22.5	76	79.4	5.2	DPM314261	200	175	31.5	196	199	6.6	DPM787688/1
85	65	22.4	79.15	83.3	6.35	DPM334255	210	185	25.4	201.6	207	12.7	DPM826728
90	70	22.4	84.15	88.3	6.35	DPM354275	220	190	35.4	212.7	217.9	6.35	DPM866748
90	72	22.5	86	89	3.6	DPM354278	220	195	25.4	211.6	217	12.7	DPM866767
90	76	22.5	86	89.4	5.2	DPM345311	230	205	25.4	221.6	227	12.7	DPM905807
95	75	22.4	89.15	93.3	6.35	DPM374295	240	215	25.4	231.6	237	12.7	DPM944846
100	75	22.4	93.15	98	6.35	DPM393275	250	220	35.4	242.9	247.9	6.35	DPM984866
100	80	25	95	98	6.35	DPM393314	250	225	25.4	241.6	247	12.7	DPM984886
100	82	22.5	96	99	3.6	DPM393322	260	235	35.1	252.9	257	12.7	DPM1024925
100	85	20	96	98.5	5	DPM393334	280	255	25.4	271.6	277	12.7	DPM1103022
100	86	20	96	98.5	5	DPM393338	300	275	25.4	291.6	297	12.7	DPM11811082
100	86	22.5	96	99.4	5.2	DPM393338/1	320	290	25.4	311.6	317	12.7	DPM1259114
105	80	22.4	98.1	103	6.35	DPM413314	320	290	35.4	312.4	317	9.5	DPM1259114/1
110	85	22.4	103.1	108	6.35	DPM433334	320	295	25.4	311.6	317	12.7	DPM12591161
110	92	22.5	106	109	3.6	DPM433362	360	335	25.4	351.6	357	12.7	DPM14171318
110	96	22.5	106	109.4	5.2	DPM433378

Recommend Products