Hayward BFAS1010TES Series BFAS Short Pattern Bulkhead Fitting, Threaded x Threaded End, PVC with EPDM Seals, 1" Size

Hayward BFAS1015TES Series BFAS Short Pattern Bulkhead Fitting, Threaded x Threaded End, PVC with EPDM Seals, 1-1/2" Size

Ymiko Large Male to Male Straight Bulkhead Fitting Connector, Industrial Grade AN8 Adapter for Fluid Transfer Systems

OSOLADY 10pcs Abs Plastic Bulkhead Tank Adapter Dn20 with Internal External Thread Water Tank Connector for Aquarium Pond Industrial Plumbing

Brass G1/2 Bulkhead Fitting Water Tank Connector with Silicone Seal, Leakproof Hose Feedthrough for Water Tank, Water Tower or Pump, Commercial and Industrial Applications(10cm)

1pc Union Pneumatic Air Tube Fittings Brass Bulkhead Fitting for Machinery 8mm Tube Size Construction Farm Restaurant Industries(PM 1-4)

8-Position 8-Wire Industrial Cat 5e RJ45 UTP Bulkhead Coupler

CHAMPION BRASS 129A-391FC2 Bulkhead Connector, 1/4 in FPT x 1/2 in MPT, Brass

jojofuny 1/2 Inch Pvc Bulkhead Water Tank Connector with Seal Gasket and Plug, Compression Fitting for Aquariums, Rain Buckets, and Industrial Plumbing Applications

Gadpiparty 1/2 Inch Bulkhead Water Tank Connector with Plug, PVC Threaded Bulkhead Fitting Hose Adapter for Plumbing and Industrial Water Systems