Latest national grease seals company for construction machinery

national grease seals description

The product has a smooth surface. The sprue on each piece is cut off and the ring castings are cleaned up to remove any imperfections. We have developed solutions of the sealing of special working condition

DMS Seals national grease seals company for construction machinery-1

DMS Seals national grease seals company for construction machinery-2

national grease seals SPECIFICATIONS

Diameter Range

3 - 1600mm

Pressure Range

0 - 30MPa

Temperature Range

-30℃ +200℃

Speed

1 m/s

Medium

hydraulic oil, flame retardant liquid, water and others

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Installation Recommendation

DMS Seals national grease seals company for construction machinery-3

Installation Sizes

Bore Diameter D1 h9		Groove Diameter	Groove Width	Radial Clearance S max.		Radius	O-Ring Cross-Section
Standard Range	Extended Application	DN H9	L1+0.2	32MPa	50MPa	R1	d2
6-18.9	6-130.0	d1+4.9	2.20	0.15	0.10	0.40	1.78
19-37.9	10-245.0	d1+7.5	3.20	0.20	0.15	0.60	2.62
38-199.9	19-455.0	d1+11.0	4.20	0.25	0.20	1.00	3.53
200-255.9	38-655.0	d1+15.5	6.30	0.30	0.25	1.30	5.33
256-649.9	120-655.0	d1+21.0	8.10	0.30	0.25	1.80	7.00
650-999.9	650-999.9	d1+28.0	9.50	0.45	0.30	2.50	8.40

Application and properties

Suitable for sealing with rotating or swinging rods, shafts, pins, rotary joints, etc. It is a rotary sealing ring that can withstand both sides pressure or alternating pressure role of the double acting effect, used in construction machinery, construction machinery and automotive equipment. It can be applied on occasions where piston rod and piston seal are required, low friction, non viscous phenomenon, simple groove, good abrasion resistance and dimensional stability.

Standard materials

Sealing ring: filled PTFE

O-Ring: NBR / FKM

Working Conditions

Working Conditions
Diameter Range	Pressure Range	Temperature Range	Speed	Medium
3-1600mm	0-30MPa	-30℃+200℃	1 m/s	hydraulic oil, flame retardant liquid, water and others

Installation Dimensions

Bore Dia.

Groove Dia.

Groove Width

Order No.

d h9

DN H9

L1+0.2

10.9

12.9

14.9

2.2

GRS6*10.9*2.2

GRS8*12.9*2.2

GRS10*14.9*2.2

16.9

18.9

19.9

2.2

GRS12*16.9*2.2

GRS14*18.9*2.2

GRS15*19.9*2.2

29.5

32.5

33.5

3.2

GRS22*29.5*3.2

GRS25*32.5*3.2

GRS26*33.5*3.2

35.5

37.5

39.5

3.2

GRS28*35.5*3.2

GRS30*37.5*3.2

GRS32*39.5*3.2

4.2

GRS42*53*4.2

GRS44*55*4.2

GRS45*56*4.2

4.2

GRS48*59*4.2

GRS50*61*4.2

GRS52*63*4.2

200

210

220

215.5

225.5

235.5

6.3

GRS200*215.5*6.3

GRS210*225.5*6.3

GRS220*235.5*6.3

240

250

280

255.5

265.5

301

6.3

8.1

GRS240*255.5*6.3

GRS250*265.5*6.3

GRS280*301*8.1

300

320

350

321

341

371

8.1

GRS300*321*8.1

GRS320*341*8.1

GRS350*371*8.1

600

650

700

621

678

728

8.1

9.5

GRS600*621*8.1

GRS650*678*9.5

GRS700*728*9.5

DMS O Ring Manufacturers strictly follows the ISO9001 international quality certification system for production management. To reduce costs with high-efficiency work is the DMS's purpose. DMS Seals takes the lead in grasping the development trend of the industry.