Rubber Bellow Mechanical Seal
![](https://superproofseals.com/wp-content/uploads/2023/11/Rubber-Bellow-Type-21.jpeg)
The Seal Type 21 is a Compact Single Spring Rubber Bellow Mechanical Seals for universal general purpose for Water / Water Based Solution like Oils, Fuels and Other Fluids and even with some Content with Abrasive and for a very wide operating condition designed for Centrifugal Pump. Rotary Equipment and Industrial applications (Food Processing, Water System, Waste Water Treatment for Petrochemical Processing, Pulp and Paper)
![](https://superproofseals.com/wp-content/uploads/2023/11/reverse-Balance-Multi-Spring-Seal-Type-73-3D-1.jpeg)
Features
Single, low cost and mass produced Mechanical Seal with Rubber Bellow. Central Point Non-Clogging Coil Spring Seal. Spring Design Seal is suitable for duel-direction of Shaft Rotation. Bellow Design Seals for Pressure supported and eliminates folds. Bellow Seals Protecting against Twisting. Unitize, easy-to-fit design seals
Materials
- Seal Ring Faces : Cabon, SiC and TC
- Seat Faces : NiR, Ceramic, SiC and TC
- Elastomer : Viton, Neoprene, EPDM, NBR and Buna-N
- MOC : SS 304 / SS 316
Operatiing Capabilities
- Shaft Dia. : 10mm to 100mm
- Pressure : Up to 8 bar
- Temperature : -20°C to 180°C
- Speed: 3000 r.p.m.
![](https://superproofseals.com/wp-content/uploads/2023/11/RUbber-Bellow-Type-21-Draw.jpeg)