Hydraulic Cylinder Seal Rotating Piston Ring Grs Sealing Ring

GRS

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1.Application and properties

This is a type of rotating seal ring suitable for rotational or swinging motion of rods, shafts, pins, rotating joints, etc. It is a double-acting rotating seal ring that can withstand pressure from both sides or alternating pressure. It is widely used in industrial fields such as construction machinery, robotic arms, and automobiles.

Low friction, no sticking phenomenon, smooth start-up, and no crawling even at low speeds.

It has a simple groove and small cross-sectional dimensions, good wear resistance, stable dimensions, excellent compatibility with hydraulic media, high temperature resistance, good extrusion resistance, and can withstand certain reciprocating motion while rotating.

2.Standard material

Sealing ring: filled PTFE

O-Ring: NBR / FKM

3.Working conditions

Working conditions

Diameter

Range

Pressure

Range

Temperature

Range°C

Speed

Medium

8～2000mm

0～30

-30～100(NBR)

-20～160(FKM)

2m/s

Hydraulic oil,

flame retardant liquid,

water and others

4. Related Dimensions

R1=0.1～0.2;R2=0.3～0.5;C=(0.7～1.0)L, The specific values are selected according to the section size of the seal. The remaining values are listed in the table below:

Bore Diameter		Groove	Groove	Radial		O-Ring
D		Diameter	Width	Clearance e max.		Cross-Section
Standard	Available	D	L	16	25	d1
Range	range	D	L	MPa	MPa	d1
6～18.9	6～130	d+4.9	2.2	0.15	0.1	1.78
19～37.9	10～245	d+7.5	3.2	0.2	0.15	2.62
38～199.9	19～460	d+11.0	4.2	0.25	0.2	3.53
200～255.9	40～455	d+15.5	6.3	0.3	0.25	5.33
256～649.9	38～655	d+21.0	8.1	0.3	0.25	6.99
650～999.9	650～999.9	d+28.0	9.5	0.45	0.3	8.4

5．Marking method

Mark with the dimension of installation groove as below：

GRS “Nominal diameter dimension d” × “Groove Diameter D” × “Groove Width L”

For example: GRS100×111×4.2 means Groove dimensions φ100×φ111×4.2

6. Installation Dimensions

Rod Dia.	Groove	Groove Width	Part No.	Rod Dia.	Groove	Groove Width	Part No.
Rod Dia.	Dia.	Groove Width	Part No.	Rod Dia.	Dia.	Groove Width	Part No.
d	D	L		d	D	L
6	10.9	2.2	GRS0060	105	116	4.2	GRS1050
8	12.9	2.2	GRS0080	110	121	4.2	GRS1100
10	14.9	2.2	GRS0100	115	126	4.2	GRS1150
12	16.9	2.2	GRS0120	120	131	4.2	GRS1200
14	18.9	2.2	GRS0140	125	136	4.2	GRS1250
15	19.9	2.2	GRS0150	130	141	4.2	GRS1300
16	20.9	2.2	GRS0160	135	146	4.2	GRS1350
18	22.9	2.2	GRS0180	140	151	4.2	GRS1400
20	27.5	3.2	GRS0200	145	156	4.2	GRS1450
22	29.5	3.2	GRS0220	150	161	4.2	GRS1500
25	32.5	3.2	GRS0250	155	166	4.2	GRS1550
26	33.5	3.2	GRS0260	160	171	4.2	GRS1600
28	35.5	3.2	GRS0280	170	181	4.2	GRS1700
30	37.5	3.2	GRS0300	180	191	4.2	GRS1800
32	39.5	3.2	GRS0320	190	201	4.2	GRS1900
35	42.5	3.2	GRS0350	200	215.5	6.3	GRS2000
36	43.5	3.2	GRS0360	210	225.5	6.3	GRS2100
40	51	4.2	GRS0400	220	235.5	6.3	GRS2200
42	53	4.2	GRS0420	240	255.5	6.3	GRS2400
44	55	4.2	GRS0440	250	265.5	6.3	GRS2500
45	56	4.2	GRS0450	280	301	8.1	GRS2800
48	59	4.2	GRS0480	300	321	8.1	GRS3000
50	61	4.2	GRS0500	320	341	8.1	GRS3200
52	63	4.2	GRS0520	350	371	8.1	GRS3500
55	66	4.2	GRS0550	360	381	8.1	GRS3600
56	67	4.2	GRS0560	400	421	8.1	GRS4000
60	71	4.2	GRS0600	420	441	8.1	GRS4200
63	74	4.2	GRS0630	450	471	8.1	GRS4500
65	76	4.2	GRS0650	480	501	8.1	GRS4800
70	81	4.2	GRS0700	500	521	8.1	GRS5000
75	86	4.2	GRS0750	520	541	8.1	GRS5200
80	91	4.2	GRS0800	530	551	8.1	GRS5300
85	96	4.2	GRS0850	550	571	8.1	GRS5500
90	101	4.2	GRS0900	600	621	8.1	GRS6000
95	106	4.2	GRS0950	650	678	9.5	GRS6500
100	111	4.2	GRS1000	700	728	9.5	GRS7000

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