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Safe-T-Seal MTP302 3-inch rubber test plug with raised square head

Safe-T-Seal

Safe-T-Seal MTP302 Test Plug 3 in 50 ft head

SKU CH-WWX0-R8GTA

Seals 3 in pipe interiors with natural rubber to hold 50 ft head pressure

  • Handles 50 ft of head pressure for reliable pipe testing
  • Fits 3 in pipe inside diameter for secure sealing
  • Natural rubber seal resists wear during pressure checks
  • Raised square head allows easy installation with standard tools
  • Complies with California Proposition 65 chemical disclosure requirements

Test Plug for 3 in Pipe

The Safe-T-Seal MTP302 test plug fits inside rigid pipe with a 3 in inside diameter. It seals pipes as small as 0.38 in and withstands 50 ft of head pressure. Plumbers and maintenance crews use it for temporary line isolation during pressure testing.

Natural Rubber Seal and Raised Square Head

The natural rubber seal expands against the pipe wall to create a watertight barrier without external clamps. A raised square head allows the plug to be tightened or removed with a standard wrench, giving positive torque control during installation and retrieval.

Insert Through Cleanout or Open End

The plug slides into the pipe from an accessible opening and is expanded by turning the square head. Over-tightening can damage the rubber seal, while debris on the pipe interior may prevent a complete seal. California Proposition 65 warns that this product contains a chemical known to cause birth defects or other reproductive harm.

Highlights

  • Handles 50 ft of head pressure for reliable pipe testing
  • Fits 3 in pipe inside diameter for secure sealing
  • Natural rubber seal resists wear during pressure checks
  • Raised square head allows easy installation with standard tools
  • Complies with California Proposition 65 chemical disclosure requirements

Specifications

BrandSAFE-T-SEAL

Questions about this item

Will the natural rubber seal need replacing after repeated use?

The seal is made from natural rubber and fits inside 3 in rigid pipe; inspect it for cracks or hardening before each pressure test and replace it if the material shows wear.

What head pressure marks the limit for the MTP302 during a long test?

The plug is rated for 50 ft of head pressure; holding pressure above that level risks unseating the seal.

Does the plug generate heat or noise when left under pressure all day?

The device is a passive mechanical plug with no moving parts, so it produces no heat or noise while holding pressure.

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