Flex/foam Expansion Joint

Expansion Joints & Plastics

This product is currently out of stock and unavailable.

SKU: 123456789 Category:

FLEX/FOAM EXPANSION JOINT is an extruded closed cell plastic joint filler compounded from low density expanded polyethylene plastic foam. Resistant to chemicals and solvents, it has recovery properties of over 99%. Because of its cell make-up, it will absorb almost no water. FLEX/FOAM is chemically inert with no food value to attract or support plant or animal life.

  • Premium joint filler
  • Workable backup material for both horizontal and vertical applications
  • Odorless and non-toxic
  • Flexible over a wide temperature range

Flex Foam Expansion Joint meets all requirements of: ASTM D4819, Type I; ASTM D1752 Modified, Section 5.1-5.4; and ASTM D5249, Type II.

• Contractor friendly, environmentally acceptable
• Compresses readily, requires only a razor knife to install
• Non-gassing, clean, non-staining when installed
• Can be over-sealed with hot or cold applied sealants
• 99% recovery properties – retains no memory
• Handles corners and radius applications easily

Flex Foam Expansion Joint is available at thicknesses up to 6” in 1/2″ increments and at standard lengths of 5’ and 10’. NOTE: Sheets over 3/4″ are laminated to thickness. Slabs are manufactured at a maximum width of 48” and can be cut to size from 2” to 48” in 1/2″ increments.

Density, Apr. (lbs/ft³)2.0 PSI
Tensile Strength (psi min.)43.0 PSI
Elongation at Break (% Min.)120 %
Water Absorption< 0.06
Compression Set (% of original thickness)24 %
Tear Strength11 (lb/in)
Compressive Strength (@ 25% PSI)6 PSI
Thermal Stability (% of change @ 158° for 24 hrs.)< 0.5
Thermal Conductivity (btu / hr/ ft² °F)0.26
Working Temp. Range-70 °F – 410 °F
Flammability (MVSS302)Pass Available


Gray, White


10 Feet, 5 feet

Slab Width



Up to 6”in 1/2”increments

Cut To Size

2”to 48”in 1/2”increments