PTFE bellow seals are designed for extremely corrosive chemicals, including concentrated acids, salts, strong oxidising & reducing agents, and chemically active organic compounds. All components which come in contact with the liquid being sealed are made of chemically inert material. Metallic components clamping ring and springs are located outside the media. In this seal series Glass filled PTFE face is composite moulded with highly flexible PTFE bellows.
Application
Used in acids, alkalis & extremely corrosive services.
Operating Limits
Pressure : 5 bars (Max)
Temperature : (-)20c to (+)90c
Speed : 2900 rpm (Max)
Sizes : 16 mm to 100 mm
Material
Seal Face : Ceramic, silicon carbide, GFT
Secondary Seals : PTFE / GFT
Metal Parts : SS 316 / Hastelloy
Pacific Seals WB3 PTFE Bellow Mechanical Seal for Acid Proof Pumps, Plastic Pumps, and Vacuum Equipment
Structural Features:
single end, balanced, independent direction of rotation, PTFE bellow, bellow transmission, external type mechanical seal. This component is easy to install. The bellow provides pressure compensation to the sealing faces. The bellow design can prevent radial runout so the floatability of the rotary ring is increased.
Scopes of Application:
widely used in acid proof pumps, plastic pumps, alkali pumps, vacuum equipment and other rotary devices.
Operational Conditions:
Temperature | ≤200ºC |
Pressure | Up to 0.5 Mpa |
Speed | Up to 10 m/s |
End play/axial float allowance | ±0.1mm |
Size | 20mm,25mm |
Brand | YUEMI |
Face | SIC |
Seat | SIC |
Elastomer | PTFE |
Spring | SS304, SS316 |
Metal parts | SS304, SS316 |