All SFI couplers are supplied with Buna-N as standard. However, this sealing compound may not be compatible with all applications.

The size indicated for a coupler or adapter is the nominal size of pipe or hose to which it connects. Standard sizes for Seal Fast adapters and couplers are 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4", 5", 6" and 8". Threaded parts are furnished with tapered pipe threads (NPT).

Dust Caps and Dust Plugs are not designed for pressure application. Caps and Plugs must be chain or cable constrained at all times.