DMS SEALS TECHNOLOGY CO.,LIMITED
The Professional Sealing Solution Supplier(O Ring Suppliers & Oil Seal Manufacturers).
DMS Seals - Hydraulic Seals and Oil Ring Seals Manufacturer & Supplier
Mail to: dms@dmsseals.comtel:+86-757-86235767
NBR70 NBR90 Nitrile Rubber O-Ring 40MPa High Pressure Buna-N Seals
1. Installation Recommendation
2. Application and properties
Double acting seals, the sealing effect is achieved by the deformation of the section of the O-Rings, and the deformation is determined by the depth of the installation groove. Under pressure, the O-ring seal has a large surface tension like liquid, used for static sealing more. It is only recommended for better conditions in dynamic applications. System lubrication, pressure, temperature, sealing clearance, speed, medium and surface quality of metal parts determine the service life of O-Rings. It is not recommended if the lubrication is not sufficient during rotary motion.
3. Standard materials
NBR / FKM
4. Performance parameter
|
Static Seal |
Dynamic Seal |
|
|
Working Pressure |
No support ring, up to 20MPa; With the support ring, up to 40MPa; With special support ring, up to 200MPa. |
No support ring, up to 5MPa; With the support ring, higher pressure. |
|
Movement Speed |
Maximum reciprocating speed up to 0.5m / s; maximum rotation speed up to 2.0m/s. |
|
|
Temperature |
NBR: -30℃ - 100℃; FKM: -20℃ - 220℃. |
|
5. Wire Diameter Tolerance
|
Wire diameter of O-Ring (mm) |
Tolerance (±mm) |
|
0-1.8 |
0.08 |
|
1.80-2.65 |
0.09 |
|
2.65-3.55 |
0.10 |
|
3.55-5.30 |
0.13 |
|
5.30-7.00 |
0.15 |
|
7.00-8.00 |
0.18 |
|
8.00-10.00 |
0.21 |
|
10.00-12.00 |
0.25 |
6. Inner diameter tolerance
|
Inner Diameter d1 mm |
Tolerance ±mm |
Inner Diameter d1 mm |
Tolerance ±mm |
Inner Diameter d1 mm |
Tolerance ±mm |
|
0.70-2.50 2.50-4.50 4.50-6.30 |
0.13 0.14 0.15 |
43.70-45.00 46.00-46.20 46.20-47.50 |
0.42 0.43 0.44 |
95.00-97.50 97.50-100.00 100.00-103.00 |
0.83 0.84 0.87 |
|
6.30-8.50 8.50-10.00 10.00-11.20 |
0.16 0.17 0.18 |
47.50-48.70 48.70-50.00 50.00-51.50 |
0.45 0.46 0.47 |
103.00-106.00 106.00-109.00 109.00-112.00 |
0.89 0.91 0.93 |
|
11.20-14.00 14.00-16.00 16.00-18.00 |
0.19 0.20 0.21 |
51.50-53.00 53.00-54.50 54.50-56.00 |
0.48 0.50 0.51 |
112.00-115.00 115.00-118.00 118.00-122.00 |
0.95 0.97 1.00 |
|
18.00-20.00 20.00-21.20 21.20-23.60 |
0.22 0.23 0.24 |
56.00-58.00 58.00-60.00 60.00-61.50 |
0.52 0.54 0.55 |
122.00-125.00 125.00-128.00 128.00-132.00 |
1.03 1.05 1.08 |
|
23.60-25.00 25.00-26.50 26.50-28.00 |
0.25 0.26 0.28 |
61.50-63.00 63.00-65.00 65.00-67.00 |
0.56 0.58 0.59 |
132.00-136.00 136.00-140.00 140.00-145-00 |
1.10 1.13 1.17 |
|
28.00-30.00 30.00-31.50 31.50-33.50 |
0.29 0.31 0.32 |
67.00-69.00 69.00-71.00 71.00-73.00 |
0.61 0.63 0.64 |
145.00-150.00 150.00-155.00 155.00-160.00 |
1.20 1.24 1.27 |
|
33.50-34.50 34.50-35.50 35.50-36.50 |
0.33 0.34 0.35 |
73.00-75.00 75.00-77.50 77.50-80.00 |
0.66 0.67 0.69 |
160.00-165.00 165.00-170.00 170.00-175.00 |
1.31 1.34 1.38 |
|
36.50-37.50 37.50-38.70 38.70-40.00 |
0.36 0.37 0.38 |
80.00-82.50 82.50-85.00 85.00-87.50 |
0.71 0.73 0.75 |
175.00-180.00 180.00-185.00 185.00-190.00 |
1.41 1.44 1.48 |
|
40.00-41.20 41.20-42.50 42.50-43.70 |
0.39 0.40 0.41 |
87.50-90.00 90.00-92.50 92.50-95.00 |
0.77 0.79 0.81 |
190.00-195.00 195.00-200.00 200.00-206.00 |
1.51 1.55 1.59 |
|
206.00-212.00 212.00-218.00 224.00-230.00 |
1.63 1.71 1.75 |
325.00-335.00 335.00-345.00 345.00-355.00 |
2.43 2.49 2.56 |
500.00-515.00 515.00-530.00 530.00-545.00 |
3.54 3.63 3.72 |
|
230.00-236.00 236.00-243.00 243.00-250.00 |
1.79 1.83 1.88 |
355.00-365.00 365.00-375.00 375.00-387.00 |
2.62 2.68 2.76 |
545.00-560.00 560.00-580.00 580.00-600.00 |
3.81 3.93 4.05 |
|
250.00-258.00 258.00-265.00 265.00-272.00 |
1.93 1.98 2.02 |
387.00-400.00 400.00-412.00 412.00-425.00 |
2.84 2.91 2.99 |
600.00-615.00 615.00-630.00 630.00-650.00 |
4.13 4.22 4.34 |
|
272.00-280.00 280.00-290.00 290.00-300.00 |
2.08 2.14 2.21 |
425.00-437.00 437.00-450.00 450.00-462.00 |
3.07 3.15 3.22 |
650.00-670.00 |
4.46 |
|
300.00-307.00 307.00-315.00 315.00-325.00 |
2.25 2.30 2.37 |
462.00-475.00 475.00-485.00 485.00-500.00 |
3.30 3.37 3.45 |
Professional O Ring Suppliers & O Ring Manufacturers
CONTACT US
TEL: +86-757-86235767
Contact Person: Teresa Chen
E-mail: dms@dmsseals.com
WhatsApp:13318313660
Mobile:13318313660
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