4" Cast Iron or Plastic to 3" Cast Iron or Plastic Flex-Seal Coupling- Cast Iron or Plastic to Cast Iron or Plastic
- Flexibility - Sleeve is manufactured of molded natural and synthetic rubber
- Leakproof Seal - Inside surfaces of transitional size couplings are stepped to conform better to different pipe sizes
- Tight Fitting - Two 300 Series Stainless Steel worm drive clamping bands hold pipe ends securely
- Corrosion Resistant - Use of stainless steel clamping bands are highly effective in a variety of environments
- Versatile - Blends of natural and synthetic rubbers permit a substantial degree of distortion without change in basic physical or chemical resistance unlike other manufacturers' thermoplastic coupling materials
- Manufactured with natural and synthetic rubbers conforming to ASTM C 425, ASTM C 1173
- 300 Series Marine Grade Stainless Steel conforms to ASTM A 240
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