| No | Without spring | Tolerance (+/-) | With spring | Tolerance (+/-) |
|---|---|---|---|---|
| 6.01 - 10.00 | -0.60 | 0.10 | -0.90 | 0.2 |
| 10.01 - 18.00 | -0.70 | 0.10 | -1.00 | 0.2 |
| 18.01 - 30.00 | -0.80 | 0.10 | -1.10 | 0.2 |
| 30.01 - 50.00 | -0.90 | 0.15 | -1.40 | 0.3 |
| 50.01 - 80.00 | -1.10 | 0.15 | -1.60 | 0.3 |
| 80.01 - 120.00 | -1.30 | 0.15 | -1.80 | 0.3 |
| 120.01 - 180.00 | -1.50 | 0.15 | -2.00 | 0.3 |
| 180.01 - 250.00 | -1.60 | 0.20 | -2.20 | 0.4 |
| 250.01 - 315.00 | -1.80 | 0.20 | -2.40 | 0.4 |
| 315.01 - 400.00 | -2.00 | 0.20 | -2.60 | 0.4 |
| 400.01 - 500.00 | -2.20 | 0.20 | -2.80 | 0.4 |
| O.D. | Enlarging size | Eccentricity | |
|---|---|---|---|
| Metal shell | Rubber shell | ||
| ≤50.00 | 0.10 - 0.20 | 0.15 - 0.30 | ＜0.25 |
| 50.01 - 80.00 | 0.13 - 0.23 | 0.20 - 0.35 | ＜0.35 |
| 80.01 - 120.00 | 0.15 - 0.25 | 0.20 - 0.35 | ＜0.50 |
| 120.01 - 180.00 | 0.18 - 0.28 | 0.25 - 0.45 | ＜0.65 |
| 180.01 - 315.00 | 0.20 - 0.30 | 0.25 - 0.45 | ＜0.80 |
| 315.01 - 500.00 | 0.23 - 0.35 | 0.30 - 0.55 | ＜1.00 |
| Height | Tolerance (+/-) |
|---|---|
| ≤10.00 | 0.20 |
| ＞10.00 | 0.30 |
| C/S | Tolerance (+/-) | C/S | Tolerance (+/-) |
|---|---|---|---|
| 0 - 1.80 | 0.08 | 5.31 - 7.00 | 0.15 |
| 1.81 - 2.65 | 0.09 | 7.01 - 8.70 | 0.18 |
| 2.66 - 3.55 | 0.10 | 8.71 - 10.40 | 0.22 |
| 3.56 - 5.30 | 0.13 |
| Type | Abbreviation | Brief | Applications |
|---|---|---|---|
| Fluororubber | FKM | High temperature resistance, most oil and solution resistant (except Ketone and Ester), chemical resistance, weather resistance and ozone resistance | 1. Engine for automotive, diesel and aircraft, and their fuel system 2. Chemical industry |
| Nitrile Butadiene Rubber | NBR | The higher the content of ACN, the better the resistance of mineral oil and fuel, but the worse the low temperature performance. Low cost and wide use. |
Hydraulic industry, nuclear power plant sealing and various oil resistant occasions |
| Hydrogenated Nitrile Butadiene Rubber | HNBR | Heat resistance, cold resistance, weather resistance, ozone resistance, fuel and alcohol based fuel resistance are better than NBR. Excellent corrosion resistance, anti dilation, tearing resistance and anti compression deformation . |
1. Automotive engine system seal 2. Refrigerant (such as R134a, 440a, 407c and etc) seal |
| Silicone Rubber | VMQ | Excellent heat resistance, cold resistance, oxidation and ozone resistance, good electrical insulation. Poor steam resistance and oil resistance. |
1. Electronic products, electronic parts 2. Aviation industry 3. Medical apparatus and instruments |
| Fluorosilicone Rubber | FVMQ | Have the advantage of FKM and VMQ. Good oil resistant, solvent resistance and high and low temperature resistance. | 1. Fuel system for automotive engine and jet engine 2. Parts of the space aircraft |
| Chloroprene Rubber | CR | Good elasticity, fire resistance and chemical resistance. Ageing resistance and weatherability are second only to EPDM. Bad at low temperature resistance and storage stability. |
1. Rubber parts and sealing rings on electrical appliances. 2. Rubber products exposed to air |
| Ethylene Propylene Diene Monomer Rubber | EPDM | Good weather resistance, ozone resistance and insulation. Excellent ageing resistance, chemical resistance and steam resistance. Slow vulcanization and bad self viscosity and mutual viscosity. |
1. High temperature steam situation 2. Auto parts and industrial products 3. Construction materials |
| Epichlorohydrin Rubber | CO/ECO | Heat resistance is better than NBR. Good ozone resistance and electrical conductivity. Poor steam resistance and oil resistance. The alkali resistance is poor, and it is easy to deform when compressing. |
Automotive industry |
