Elastomers
Butterfly Gasket
Replacement elastomer seat liners and gaskets for wafer and lug-style butterfly valves.
Heavy-duty elastomeric valve seat liners designed for concentric wafer, lug, and flanged butterfly valves. Provides bubble-tight bi-directional shut-off while isolating the valve body from the corrosive process media.
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Specifications
Technical profile
- Compatibility
- Fits standard 2 inch to 24 inch (DN50 to DN600) butterfly valves
- Elastomers
- EPDM / FKM (Viton) / NBR / PTFE-bonded EPDM / Silicone
- Seat profile
- Boot-style seat liner with integrated flange sealing ribs
- Pressure rating
- PN10 / PN16 / ANSI Class 150 bi-directional bubble-tight rating
- Temperature
- -30 °C to +180 °C (compound dependent)
- Backing ring
- Rigid phenolic or aluminum insert ring reinforced options
Specifications are typical and vary by variant. Share your duty conditions for an exact recommendation.
Key benefits
Why this product
- Integrated O-ring ribs on flange face eliminate the need for separate flange gaskets
- Low operating torque geometry reduces valve actuator sizing requirements
- High abrasion resistance against slurries, dry powders, and pneumatic conveying lines
- Food-grade EPDM and white silicone options certified for hygienic beverage lines
Applications
Typical industries
FoodChemicalBeveragesBreweries
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Need this butterfly gasket for your line?
Share your duty conditions and drawings — our team responds with a technical recommendation and a firm quote.