Triple Seal gaskets are typically used in dry pipe fire protection systems, freezer applications and vacuum service. They differ from the "C" Type gasket in that they have an additional center sealing surface that sits over the pipe gap where the grooved pipe ends meet. As the coupling housing is tightened, the center seal closes off the pipe gap and provides the "triple seal". Sold as part of COOPLOK™ 65LRTRI coupling.
(NOTE: A petroleum-free silicone based lubricant is recommended for dry pipe systems.)
Available in EPDM only. Sizes: 1-1/4" to 8"
COOPLOK Reducing Tee
7055 90° Adapter Elbow, Gr x MPT
7050-3D 90° Long Rad. Elbow
7053-6D 11-1/4° Long Rad. Elbow
7074 End Cap
7460 Short Pattern Tee
7053-5D 11-1/4° Long Rad. Elbow
7085 Flange Nipple, #300
7081 Adapter Nipple Gr x MPT
7068 Cross