| Common types of high demond nbr/fkm//fpm oil seals and rubber productss |
| Type | Code number | Main features | Usage | Dielectric pressure resistance | Maximum line speed |
| Simple single lipped | B | It is commonly used for high and low speed rotating shafts and reciprocating movement to seal mineral, oil and water. | Ordinary high demond nbr/fkm//fpm oil seals and rubber products, in the case of less dust and impurities, the use of medium pressure, the reciprocating speed of <0.1m/s. | <0.05MPa | 15m/s |
| Regular lip | FB | In addition to the characteristics of the above S type high demond nbr/fkm//fpm oil seals and rubber productss, dust can be prevented. | Ordinary high demond nbr/fkm//fpm oil seals and rubber products, with dustproof lips, dustproof, resistant to medium pressure | <0.05MPa | 15m/s |
| No spring type | BV | Spring free single lip type inner frame type rubber high demond nbr/fkm//fpm oil seals and rubber products. | Generally applicable to low-speed conditions, the sealing medium for the lubrication of ester. | <0.05MPa | 6m/s |
| Outer skeleton, single lip | W | With the spring single lip exposed skeleton rubber high demond nbr/fkm//fpm oil seals and rubber products, waist thin, follow good, good rigidity. | Ordinary high demond nbr/fkm//fpm oil seals and rubber products, used in case of less dust and impurities | <0.05MPa | 15m/s |
| Outer skeleton, double lips | FW | With the lips of the lips exposed, skeleton rubber high demond nbr/fkm//fpm oil seals and rubber products, waist thin, followed by good, high stiffness, good coaxial. | Ordinary high demond nbr/fkm//fpm oil seals and rubber products, with dustproof lips, dustproof, resistant to medium pressure <0.05 | <0.05MPa | 15m/s |
| Fabricated single lipped | Z | From the inside and outside the outer skeleton high demond nbr/fkm//fpm oil seals and rubber products skeleton assembly into piping and installation of high precision, fast heat dissipation, heavy load characteristics. | Suitable for heavy load under high temperature and high speed condition | <0.05MPa | 15m/s |
| Fabricated double lipped | FZ | The assembled external skeleton high demond nbr/fkm//fpm oil seals and rubber products with side lip has the characteristics of dust resistance, high installation accuracy, fast heat dissipation and heavy load characteristics. | Apply to high temperature, high speed, heavy load under dust condition | ≤0.05MPa | 15m/s |
| Unidirectional reflux type | Dextral SR,Levo DL | A diagonal bar with angle in lip air measurement system using fluid mechanics principle, produces pump function, with reflux effect. | Because of the backflow effect, the radial force is smaller than that of the ordinary high demond nbr/fkm//fpm oil seals and rubber products, thereby reducing wear and heat build-up and improving service life | <0.05MPa | 20m/s |
| Pressure type | NY | The lip is short, stubby waist, with pressure, work pressure is less than 3MPa. | The shaft end high demond nbr/fkm//fpm oil seals and rubber products for high pressure pump, general PV value is less than or equal to 8 | ≤3MPa | 15m/s |
