FlexFoam-iT!™ IV Tuff Stuff

FF4pint B5398377-24D0-034F-8E86-B3724E8DF81F
Foam

Low-density, flexible PU-foam with a higher tear strength, stiffness, and compactness v.s. other flexible foams with comparable density.

  • Density: ~64 kg/m³ (4 lb/ft³)
  • Mix ratio: 1A:1B by vol
  • Working tim: 45–60 sec
  • Demold time: 15–30 min
  • Full cure: 2–3 hours
  • Expansion: ~6× original volume
€ 27.04

(€ 22.35 without 21% VAT)

In stock

Description

This medium-density, tough flexible polyurethane foam is designed for applications requiring greater strength and durability while maintaining flexibility. 

With a density of approximately 64 kg/m³ (4 lb/ft³), it balances lightweight performance with improved tear and impact resistance.

Features

  • Mix ratio: 1A:1B by volume for easy measuring
  • Working time: 45–60 seconds for thorough mixing and pouring
  • Expands to ~6 times its original liquid volume
  • Demold time: 15–30 minutes for fast production cycles
  • Full cure: 2–3 hours for final toughness and flexibility
  • Cured foam color: off-white to light cream
  • Can be cut, carved, sanded, drilled, or coated
  • Compatible with pigments for color customization

Thanks to its formulation, this foam offers increased durability compared to softer foams, making it suitable for props, costume and stunt padding, set pieces, lightweight structural fills, and special effects elements that must withstand repeated handling, mild impact, or compression while remaining lightweight and flexible.

Instructions

  • Mix the components at a 1A:1B ratio by volume. 
  • Stir thoroughly and pour quickly within 45–60 seconds. 
  • The foam expands to approximately 6 times its volume, so ensure there is enough space for expansion.
  • Demold time: 15–30 minutes
  • Full cure: 2–3 hours
  • Once cured, the foam is flexible, durable, and easy to cut or shape. It is ideal for creating props, padding, and lightweight fills.
Available in Foam
Product Handling Time Cure Time Specific Gravity Specific Volume Expansion Foam Density Mixed Viscocity Mix Ratio By Volume Mix Ratio By Weight Pot Life Color Mixed Viscocity Cure Time Pot Life Specific Volume Specific Gravity Expansion Mix Ratio By Weight Foam Density Mix Ratio By Volume Handling Time
FlexFoam-iT!™ III 25 min. 2 h. 0.05 g/cc 504 cu. in./lb. 15 times 3 lb/ft³ 1,000 cps 1A:2B 57.5A:100B 35 sec. White 1,000 cps 2 h. 35 sec. 504 cu. in./lb. 0.05 g/cc 15 times 57.5A:100B 3 lb/ft³ 1A:2B 25 min.
FlexFoam-iT!™ IV Tuff Stuff 45 min. 2 h. 0.06 g/cc 420 cu. in./lb. 13 times 4 lb/ft³ 1,000 cps - 80A:100B 30 sec. - - - - - - - - - - -
FlexFoam-iT!™ V 45 min. 2 h. 0.08 g/cc 315 cu. in./lb. 11 times 5 lb/ft³ 1,000 cps 1A:1B 105A:100B 50 sec. White 1,000 cps 2 h. 50 sec. 315 cu. in./lb. 0.08 g/cc 11 times 105A:100B 5 lb/ft³ 1A:1B 45 min.
FlexFoam-iT!™ 6 Pillow Soft 60 min. 2 h. 0.09 g/cc 280 cu. in./lb. 10 times 6 lb/ft³ 1,000 cps 1A:1B 105A:100B 35 sec. White 1,000 cps 2 h. 35 sec. 280 cu. in./lb. 0.09 g/cc 10 times 105A:100B 6 lb/ft³ 1A:1B 60 min.
FlexFoam-iT!™ 7 FR 60 min. 2 h. 0.11 g/cc 229 cu. in./lb. 8 times 7 lb/ft³ 1,000 cps 1A:1B 100A:88B 35 sec. White 1,000 cps 2 h. 35 sec. 229 cu. in./lb. 0.11 g/cc 8 times 100A:88B 7 lb/ft³ 1A:1B 60 min.
FlexFoam-iT!™ VIII Pillow Soft 25 min. 2 h. 0.13 g/cc 194 cu. in./lb. 7 times 8 lb/ft³ 1,000 cps 1A:2B 52.6A:100B 35 sec. White 1,000 cps 2 h. 35 sec. 194 cu. in./lb. 0.13 g/cc 7 times 52.6A:100B 8 lb/ft³ 1A:2B 25 min.
FlexFoam-iT!™ X 45 min. 2 h. 0.16 g/cc 157 cu. in./lb. 6 times 10 lb/ft³ 1,000 cps 1A:1B 105A:100B 50 sec. White 1,000 cps 2 h. 50 sec. 157 cu. in./lb. 0.16 g/cc 6 times 105A:100B 10 lb/ft³ 1A:1B 45 min.
FlexFoam-iT!™ 14 45 min. 2 h. 0.22 g/cc 114 cu. in./lb. 4 times 14 lb/ft³ 1,000 cps 1A:2B 100A:190B 60 sec. White 1,000 cps 2 h. 60 sec. 114 cu. in./lb. 0.22 g/cc 4 times 100A:190B 14 lb/ft³ 1A:2B 45 min.
FlexFoam-iT!™ 15 Tuff Stuff SLOW 90 min. 4 h. 0.24 g/cc 115 cu. in./lb. 4 times 15 lb/ft³ 1,000 cps 1A:2B 100A:185B 2 min. - - - - - - - - - - -
FlexFoam-iT!™ 17 30 min. 2 h. 0.27 g/cc 93 cu. in./lb. 3.5 times 17 lb/ft³ 1,000 cps 1A:2B 100A:185B 60 sec. White 1,000 cps 2 h. 60 sec. 93 cu. in./lb. 0.27 g/cc 3.5 times 100A:185B 17 lb/ft³ 1A:2B 30 min.
FlexFoam-iT!™ 23 FR 60 min. 2 h. 0.37 g/cc 68 cu. in./lb. 2 times 23 lb/ft³ 1,000 cps - 85A:100B 90 sec. White 1,000 cps 2 h. 90 sec. 68 cu. in./lb. 0.37 g/cc 2 times 85A:100B 23 lb/ft³ - 60 min.
FlexFoam-iT!™ 25 25 min. 2 h. 0.4 g/cc 63 cu. in./lb. 2 times 25 lb/ft³ 1,000 cps - 1A:2B 90 sec. White 1,000 cps 2 h. 90 sec. 63 cu. in./lb. 0.4 g/cc 2 times 1A:2B 25 lb/ft³ - 25 min.
Archery Target Repair Kit - - - - - - - - - - - - - - - - - - - - -
PUR E60 - - - - - - - - - - - - - - - - - - - - -

Why buy at FormX?

Subscribe to our Newsletter

Receive €5,- discount on your first purchase!

Visa logo iDeal logo Mastercard logo Paypal logo FedEx logo FedEx logo
This website has been developed by Usecue B.V.
© 2026 FormX B.V.