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Black flexible elastomeric tee pipe fitting with closed-cell foam structure

K-Flex Usa

K-Flex Usa 801-T-048278 Elastomeric Tee Pipe Fitting 2-7/8 in x 1-5/64 in

SKU CH-416J-20C4J

Insulates 2-7/8 in pipe tees with flexible Buna-N/PVC foam rated for -297 to 220 °F and UL 94 flame spread 25

  • Wide temperature range from -297 °F to 220 °F
  • Closed-cell foam insulation with R-value 3.2
  • Plenum-rated with flame spread index 25
  • Antimicrobial and flame-retardant Buna-N rubber/PVC
  • Flexible unslit tee fits 2-7/8 in tube outside diameter

K-Flex USA 801-T-048278 Elastomeric Tee Fitting

This elastomeric tee fitting connects three pipe sections in plumbing and HVAC systems. It is built for installers who need a flexible, closed-cell insulation piece that fits a 2 7/8 inch tube outside diameter. The unslit design requires placement before final pipe assembly.

Capacity and headroom: 1/2 in wall, R 3.2.

The 1/2 inch wall thickness delivers an R value of 3.2 for thermal control on hot or cold lines. It operates continuously from -297 °F to 220 °F, covering cryogenic and high-temperature duties. The Buna-N rubber and PVC blend resists microbial growth and meets a flame spread index of 25.

Replaces rigid tees and unslit wrap on 2 1/2 in pipe

Use this fitting to replace rigid insulated tees or field-wrapped insulation where vibration or thermal cycling cause gaps. The jump is worth it when a plenum-rated, UL 94 listed component is required and the unslit form can be installed during initial pipe layout. It is not for retrofit jobs where the pipe cannot be disconnected.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 78% of the 973 comparable items (median $21.99).

Specifications

Product
Brand nameK-FLEX USA

Questions about this item

Will the 2-7/8 in tee fit onto my existing 2-1/2 in copper pipe without an adapter?

Yes, the fitting is made for a 2-1/2 in pipe size and its 2-7/8 in inside diameter matches that tube outside diameter.

How can I verify the tee is performing correctly once installed?

The closed-cell Buna-N/PVC foam should feel firm and continuous, with no gaps at the joints, and the line temperature must stay between -297 °F and 220 °F.

Does the package include adhesive or tape for sealing the unslit tee, or do I need to buy them separately?

The tee ships unslit with no adhesive or tape included, so a compatible insulation adhesive and vapour-barrier tape must be purchased separately.

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