MNPT sealing plug These inexpensive 1/8th in. Male NPT plugs are designed to seal unused ports in our KF to NPT Female adapters or other open 1/8th in. NPT ports in your vacuum system. They are made of corrosives resistant stainless steel. Plug, 1/8th in. Male NPT, Stainless Steel Pipe Thread: 1/8 in. NPT-Male

These Swagelok® 1/4" Male NPT pipe plugs are made of corrosion resistant 316 stainless sheel and are part number SS-4-P. They are designed to seal unused female NPT ports in our KF-to-NPT Female adapters or other open 1/4 inch NPT ports in your vacuum system. . For a good vacuum seal we always recommend using a pipe thread sealant when assembling tapered threads. Pipe thread sealants and pipe tape are sold on this web site. Swagelok-TM Swagelok Company

MNPT sealing plug These inexpensive 1/4th in. Male NPT plugs are designed to seal unused ports in our KF to NPT Female adapters or other open 1/4th in. NPT ports in your vacuum system. They are made of corrosives resistant stainless steel. Plug, 1/4th in. Male NPT, Stainless Steel Pipe Thread: 1/4 in. NPT-Male