The Seal Type 21 is a compact single spring rubber bellow mechanical seal for centrifugal pumps that is suited for use with water and water-based solutions such as oils, fuels, and other fluids as well as with some abrasive content. Industrial applications for rotary equipment, include food processing, water systems, waste water treatment for petrochemical production, and pulp and paper.
Features :
mechanical seal that is single, inexpensive, and mass-produced with a rubber bellow. Non-Clogging Coil Spring Seal at Central Point. The Spring Design Seal can rotate in both directions around the shaft. Bellow design avoids folds and seals for pressure support. Bellow seals that prevent twisting are present. Easy-to-install, unitize 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
Operating Capabilities :
- Shaft Dia. : 10mm to 100 mm
- Pressure : Up to 8 bar
- Temperature : -20oC to 180oC
- Speed: 3000 r.p.m.