4 NPT Bulkhead Fitting. PVC with EPDM Gasket

Additional bulkhead fittingMade from PVCEPDM gasketFemale-Female NPT threadedHole saw size to drill the hole : 5-3/4″Minimum fitting installation

Hayward PVC Bulkhead Fitting, Class 150, EPDM Gasket, 1-1/4 Socket x Threaded: Compression Bulkhead Fittings: : Industrial & Scientific

TerreMax Nylon Bulkhead Fittings, 3/4 in. Female NPT, Nitrile Rubber - John M. Ellsworth Co. Inc.

4 Polypropylene Tank Adapter & EPDM Gasket – Chemical Pump

HAYWARD, PVC Body, 3/4 in Female Threaded Inside Connection, Bulkhead Tank Fitting - 13L947

Polypro Threaded Bulkhead Fitting - 4 FPT x 4 FPT - Pond Supplies Canada

Fire Protection Fittings - 6 x 4 Reducing Coupling - EPDM Gasket

1-1/2 FNPT Norwesco 316 Stainless Stainless Tank Fitting, Full Coupling (Double Threaded) 4 Bolt Complete. Includes EPDM Gasket -and- Anti-Seize Compound, NFC64253

PTFE Bulkhead, 1/4 in. to 4 in. Sizes

Everbilt 1-1/4 in. FIP x MIP Barrel Bulkhead Union with EPDM Washer Fitting 800459 - The Home Depot