HPU Thermoplastic Polyurethane

Formulated of copolymers of ether or ester based urethanes, this material is used in a wide application of seals, wipers, back-up rings, cushions, bumpers, and a myriad of other uses. Highly resistant to oil swell, ozone, oxidation and abrasion, it also has excellent cut resistance. Highly resilient, urethanes also have high tensile strength and elongation properties. Urethanes remain an excellent choice in hydraulic systems using petroleum based fluids. Most urethane seals remain flexible and efficient in temperatures ranging from -65° F to +200° F with some able to withstand intermittent temperatures up to +300° F.

  • High-impact urethane
  • Simulates ABS and PC/ABS
  • Good heat resistance
  • Ruggedized covers and skins
  • Medical Equipment
  • Scientific instruments
  • Consumer Electronics
  • Electronic Controllers


SSP Manufacturing, Inc.

Phone: 1-908-852-3125     Email: gm@sspseals.com

Data Sheet for HPU (Thermoplastic Polyurethane)

Property Specification Value
Hardness ISO 868 95 +/- 2 shore A
Hardness ISO 868 48 +/-3 shore D
Modulus 100% DIN 53 504 Greater than or Equal to 2175 psi
Modulus 100% DIN 53 504 Greater than or Equal to 4160 psi
Tensile strength DIN 53 504 Greater than or Equal to 7250 psi
Elongation at break DIN 53 504 Greater than or Equal to 350%
Tear Strength DIN 53 ISO 34-1 Methode B Greater than or Equal to 570 lbf/inch
Specific Gravity ISO 1183 1.2 g/cm3
Abrasion DIN 53 516 17 mm3
Compression set ISO 815 Less than or Equal to 27%
70 deg. C / 24h @ 25% deflection
Compression Set ISO 815 Less than or Equal to 33%
100 deg. C / 24h @ 25% deflection
Min. Service Temperature -4 deg. F
Max. Service Temperature 240 deg. F
HPU is a thermoplastic polyurethane (water resistant) that is suitable for use in high pressure hydraulic sealing applications. The material is extremely wear and extrusion resistant. This compound has been stabilized to prevent deterioration in water based fluids and therefore is suitable in hydraulic applications where water and water based fluids are being used.
This material is FDA Approved (FDA CFR 21-177.2600 Compliant)
FDA Approved Seals & Gaskets