Weijin
Mechanical Seals Factory offer pump seals, auto
cooling pump seals,
industrial pump seals, graphite seal faces and
ceramic seal faces, etc.

Features of
john crane water pump mechanical seal 21-7/8"
1. Model: type 21
2.
Stationary Ring: ceramic
3. Rotary Ring: carbon
4. Secondary
Seal: NBR
5. Spring&Metal parts: steel
Working Conditions of
john crane water pump mechanical seal 21-7/8"
1. Pressure: ≤0.8Mpa
2. Speed: ≤10m/s
3. Temperature: ≤-20℃~150℃
Drawing and Sizes of
john crane water pump mechanical seal 21-7/8"
Model | d | D | D1 | L1 | L2 |
WJ21-7/8" | 22.225 | 33.4 | 38.1 | 10.29 | 24 |