Seal Proof Engineering
Technical datasheet
Mechanical Shaft Seals
Teflon Bellow Seals
Outside-mounted PTFE bellows seal for extremely corrosive services, in single or multi spring form.
Description
A single-acting, outside-mounted seal using a PTFE bellows as the secondary seal, available in both multi spring and single spring designs and independent of direction of rotation.
Intended for extremely corrosive services. Faces are supplied in GFT, CFT, silicon carbide or ceramic; springs in Teflon-covered spring steel, SS 316, SS 304 or Hastelloy-C.
Specifications
| Seal characteristics | Single acting · Outside mounted · Multi spring & single spring design · Independent of direction of rotation |
|---|---|
| Shaft diameter d1 | 19mm to 150mm |
| Temperature t | -45°C to +120°C † provisional |
| Pressure p | 6 bar (max) |
| Velocity v | 16 m/sec |
Summary envelope: shaft 19–150 mm · pressure to 6 bar
Materials of construction
- Face materials: GFT / CFT / Silicon Carbide / Ceramic
- Metal parts: SS 316, SS 304, Hastelloy-C
- Springs: Teflon Covered Spring Steel, S.S.316, S.S.304, Hastelloy-C
- Secondary seal: PTFE Bellows
Applications
- Extremely corrosive services