Getting a Grip on Strong Seals

J.W. Winco now offers its GN 441 and 442 Series threaded plugs not only with finger grips, but also:

  • A relatively soft seal embedded in a radial recess on the plane side, which makes the seal captive, so it cannot be squeezed out during tightening, and enhances the sealing effect even on uneven surfaces.
  • Aluminum plug bodies, with either a tumbled matte or black plastic-coated finish.
  • An NBR synthetic rubber seal (for the GN 441) or a Viton® seal (for the GN 442).
  • An easy-to-turn profile as a result of the finger grip.
  • A range of sizes with metric or BSPP parallel threads.
  • An external diameter matching the screw-in holes for DIN 3852 pipe bolt connections.
  • Availability with or without a vent hole.
  • RoHS compliance.
  • An optional dipstick upon request.