Polyurethane Technical Data

Polyurethane Technical Data

Polyurethanes are some of the most versatile plastic materials to date. What makes polyurethane incredibly useful is its ability to be molded into a seemingly infinite number of shapes, sizes, and hardness ranges (durometers), allowing it to adapt to some of the most challenging applications. See our polyurethane technical data tables below.

Polyurethane

Polyurethane holds the characteristics of both plastic and rubber, making it incredibly durable yet also resilient. The inherent characteristics of rubber and plastic combined in polyurethane allow it to hold up against repeated impact, abrasion, chemicals, and heat, making it the ideal polymer for demanding situations (data in following chart based on our PTMEG polyether formulation).

Common DurometersTensile (psi)100% Modulus (psi)300% Modulus (psi)% Elongation at BreakDieC Tear (D624) in pliSplit Tear (D1938) in pliCompression SetRebound %Operating Temp (Gen)
93-97A7500220050003505451303248-80℉ to 200℉
90A6480110021004504551103048-80℉ to 200℉
81-85A53007801400580270602860-80℉ to 200℉
71-80A28354608005602503031ND-80℉ to 200℉
65-70A25003605556002152523ND-80℉ to 200℉

Uniflex Performance Series Polyurethane (Vulkollan® equivalent)

Uniflex offers an ultra-high-performance grade polyurethane series that outperforms Vulkollan® on almost every basis (see table below). Our Performance Series polyurethanes are capable of competing head on with Vulkollan® and often take its place due to their enhanced physical properties and economic price. Whether its roller coaster wheels, high load casters, or valve seats, Uniflex’s Performance Series polyurethane is guaranteed to perform. See the high performance polyurethane technical data tables below.

Physical PropertiesUNIFLEX HIGH PERFORMANCE PU BLEND A (UNIDUR 7400HP)Vulkollan(NDI)PPDIUNIFLEX HIGH PERFORMANCE PU BLEND B (UNIDUR 5000HP)
Hardness, Shore93A92A93A93A
Elongation, %760740580650
Tensile Strength, psi (MPa)7400 (51.0)7100 (53.1)6100 (42.1)5000 (34.4)
Split Tear, pli (kN/m)490 (86)310 (54)400 (70)440 (77)
Bayshore Rebound, %68626857
UNIFLEX HIGH PERFORMANCE PU BLEND A (UNIDUR 7400HP)Vulkollan (NDI)PPDIUNIFLEX HIGH PERFORMANCE PU BLEND B (UNIDUR 5000HP)
Physical PropertiesExcellentExcellentExcellentGood
Dynamic PropertiesExcellentExcellentExcellentGood
UV Resistance (Yellowing)ExcellentSignificantly DarkensYellowsYellows
Storage Stability and HandlingExcellentLimitedGoodGood
Processing EaseExcellentShort shelf lifeFairGood
Post Cure ProcessingStandardComplexStandardStandard

Common Applications

  • High Load Wheels and Casters
  • Roller Coaster Wheels
  • Elevator Wheels
  • Valve Seats
  • Seals and O-rings
  • Plunger pump parts
  • Slurry and mud handling equipment
  • Equipment Liners
  • Scrapers
  • Doctor blades
  • Bumpers and shock absorbers
  • Vacuum grippers
  • Roller Covers
  • Elastic couplings
  • Forklift tires
  • Agricultural equipment parts
  • Gaskets and Stripper rings
  • In-line skate wheels
  • Skateboard and scooter wheels

Durometer

Durometer is the measure of a materials hardness. Polyurethane is often measured on the Shore OO, A, and D scale where OO represents very soft to medium hard materials, A represents soft to very hard materials, and D represents medium hard to extra hard materials. There is overlap amongst the scales and is represented in the diagram below, which displays equivalency to the other scales and common products.

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