Polypro wingnut, nylon top plate, soft PVC gasket and nylon base/stem for simplicity and strength. For head tests. Provides a leak free seal at over 8 times the P.S.I. of other mechanical test plugs. Back to front wedge design prevents blowouts at high and low temperatures. Nonslip shoulder for fast, easy installation.
Polypro wingnut, nylon top plate, soft PVC gasket and nylon base/stem for simplicity and strength. For head tests. Provides a leak free seal at over 8 times the P.S.I. of other mechanical test plugs. Back to front wedge desi...
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