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Box of twenty black rubber tire plug stems, 3/16 inch diameter

Xtra Seal

Xtra Seal 13-621 Tire Plug Stems 3/16 in 20 pk

SKU CH-SGVF-Y90FE

Pack of 20 rubber tire plug stems, 3/16 inch diameter, for chemical or heat vulcanisation repair

  • Product colorBlack
  • Overall height1
  • Overall length1
  • Product weight0.2
  • Overall width1
  • Rubber construction withstands vulcanization heat and chemicals
  • 3/16 inch diameter fits standard puncture sizes
  • Pre-coated with vulcanizing gum for immediate bonding
  • Twenty stems per pack cover multiple repairs
  • Black colour blends with tyre tread for discreet finish

Repair kit for punctures

Xtra Seal 13-621 plug stems come in a pack of 20 black rubber pieces measuring 3/16 in diameter. They are designed for chemical or heat vulcanisation and arrive dipped with vulcanising gum. Professional technicians and DIY motorists use them to seal tread-area punctures on passenger and light-truck tyres.

Fits standard insertion tools

Each stem requires a compatible spiral probe and insertion needle, plus vulcanising cement if the repair procedure calls for it. The pre-coated gum reduces the need for extra sealant during installation. The 20-piece quantity keeps a workshop or vehicle kit stocked for multiple repairs without frequent reordering.

Holds under sustained pressure

Once vulcanised, the rubber body bonds to the tyre casing and maintains an airtight seal through repeated heat cycles and highway speeds. The gum coating cures into the injury channel, resisting moisture and flex fatigue better than temporary string plugs alone. Not intended for sidewall damage or holes larger than the 3/16 in stem diameter.

How it compares

Measured against everything we stock in Wheel & Tire Care Accessories, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 88% of the 300 comparable items (median $42.49).

Specifications

Product
Brand nameXTRA SEAL
Product colorBlack

Questions about this item

How many 3/16 in plug stems are included in the 13-621 pack?

The pack contains 20 black rubber plug stems, each 2 1/4 in long and 3/16 in diameter, dipped with vulcanizing gum for chemical or heat vulcanization repairs.

Do the rubber stems generate heat or require power during a repair?

No, the stems are passive rubber pieces coated with vulcanizing gum; they create a seal through chemical or heat vulcanization without any electrical draw or heat generation of their own.

What tools or materials must I already have to use these plug stems?

You need a compatible insertion tool, vulcanizing cement or a heat vulcanization source, and a prepared puncture channel in the tire before installing the gum-dipped stems.

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