Rubber & Elastomers•Polyurethane Elastomers•

VERIFIED(Source-Verified)

Polyether Polyurethane (EU)

Primary Designation:ASTM EU

Aliases:

Polyether UrethaneCast Polyether PolyurethanePTMEG UrethaneEU Urethane

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Data Completeness:0 composition elements and 2 condition-specific property values cataloged.

Omitted fields represent unverified properties. "Missing is better than invented."

Key Engineering Properties

Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.

Hardness (Shore A)

60 – 95 Shore ARANGE · Cast PTMEG-Based Polyether Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) · temperature not stated

ASTM D2240 / ISO 48-4

Service Temp Range

-40°C to 80°CContinuous Limit

Continuous service typically -40°C to +8...

Engineering Summary

Polyether Polyurethane (EU) is an elastomeric urethane polymer synthesized from polyether diol soft segments (typically polytetramethylene ether glycol [PTMEG]), diisocyanates, and diol chain extenders. In contrast to polyester urethane (AU), the ether linkage in EU provides high resistance to hydrolytic cleavage in ambient and warm water service, allowing polyether urethanes to operate in aqueous, subsea, and wet slurry environments without rapid loss of integrity. EU also provides superior microbial resistance, higher dynamic rebound resilience, and superior low-temperature flexibility (down to -40°C). While its dry sliding abrasion resistance and petroleum oil resistance are slightly lower than AU, EU is the preferred polyurethane for aqueous, marine, and low-temperature engineering applications.

Polyether Polyurethane (EU) Documented Applications

›Subsea offshore umbilical cable jackets, bend restrictors, and pipeline pigs
›Slurry pump impellers, cyclone hydrocyclone liners, and flotation cell wear parts
›Boat rollers, marine dock bumpers, and water-lubricated bearing sleeves
›Low-temperature snowplow cutting edges, scraper blades, and ski-lift drive wheels
›Aqueous slurry transfer tubing, medical tubing, and clean-in-place sanitary seals

Recognized Aliases

Source-backed commercial trade name and short designations cataloged in canonical data.

Polyether UrethaneCast Polyether PolyurethanePTMEG UrethaneEU Urethane

Elastomer Technical Profile • Polyether Polyurethane (EU)

ASTM D1418: EUISO 1629: EUASTM D2000: Type BG (EU)

Polymer backbone: Polyether-based polyurethane (PTMEG soft segment). Thermoset and cast elastomer mechanical, thermal, and chemical behavior depends strongly on compounding ingredients, crosslink density, and curing system.

Key Engineering Advantages

•Outstanding hydrolytic stability; highly resistant to water-induced chain cleavage in ambient and warm aqueous and marine service
•High resistance to fungal and microbial digestion under ASTM G21 environmental test conditions
•Superior low-temperature flexibility maintained down to -40°C without plasticizer extraction
•Higher dynamic rebound resilience and lower internal heat generation than polyester AU
•Excellent slurry abrasion and impingement resistance in wet mining and dredging operations

Engineering Limitations & Risks

•Slightly lower mechanical tensile strength and sliding abrasion resistance than polyester AU in dry conditions
•Moderate petroleum oil and solvent resistance; inferior to polyester AU in aromatic fuels
•Continuous thermal capability limited to 80°C (176°F) in water or air
•Attacked by concentrated acids, alkalis, ketones (MEK), and chlorinated solvents

Thermal Operating Limits & Service Profile

Min Continuous-40°C

Max Continuous80°C

Max Intermittent / PeakNot specified

Note: Continuous service typically -40°C to +80°C in air per Parker ORD 5700 Section II (Figure 2-3 & Table 2-2). In aqueous service, PTMEG polyether urethanes provide high hydrolytic stability in ambient and warm water (where polyester AU fails), but pressurized steam and boiling water are not recommended. ASTM D2000 line callouts reflect 70h laboratory test conditions rather than continuous service ratings.

Chemical & Environmental Media Compatibility (Engineering Selection Guide)

Parker ORD 5700 Selection Ratings

Ratings represent manufacturer engineering fluid selection guidance (Parker ORD 5700 / producer design manuals). They do not substitute for batch-specific ASTM D471 / ISO 1817 laboratory immersion testing under service temperature, pressure, and dynamic stress.

Water & Aqueous Slurries (Continuous)High hydrolytic stability in continuous ambient and warm water immersion; higher water absorption and thermal degradation occur in pressurized hot water or steam

EXCELLENT

Seawater & Marine EnvironmentsStandard material for offshore subsea bend restrictors and cable jackets

EXCELLENT

Microbial & Fungal GrowthResistant to fungal and microbial growth; passes ASTM G21 test criteria without requiring added biocides

EXCELLENT

Atmospheric Ozone & UVOutstanding resistance to atmospheric ozone cracking (ASTM D1149 conditions produce zero cracking at 100 pphm)

EXCELLENT

Petroleum Oils & GreasesGood resistance to mineral oils; slightly more swell than polyester AU

GOOD

Ketones & Strong SolventsSevere swelling and softening in acetone, MEK, and toluene

NOT RECOMMENDED

Compounding & Physical Property Context

Compounding Dependency: PTMEG (polytetramethylene ether glycol) soft segments provide superior mechanical properties and resilience compared to cheaper PPG (polypropylene glycol) polyether grades. Shore hardness is controlled by hard segment ratio (isocyanate/curative).

Gas & Fluid Permeability: Low gas and water vapor permeability.

Abrasion Endurance: Outstanding wet slurry abrasion and particle impingement resistance in aqueous pumping applications per Parker ORD 5700 Section II.

Tear Resistance: High cut, gouge, and tear resistance under aggressive mineral and wet slurry flow per Parker ORD 5700 Section II.

Compression Set (ASTM D395): Good compression set resistance with high recovery in dynamic marine applications.

Polyether Polyurethane (EU) Specifications & Designations

Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.

Direct Standard DesignationsDIRECT DESIGNATION

3 Primary Identifiers

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System	Identifier	Standard System Name	Classification Notes & Provenance
ASTMPRIMARY	EU	ASTM D1418 Nomenclature	—Ref: Standard Practice for Rubber and Rubber Latices—Nomenclature (ASTM D1418-22) / Rubber and latices—Nomenclature (ISO 1629:2013)
ISO	EU	ISO 1629 Nomenclature	—Ref: Standard Practice for Rubber and Rubber Latices—Nomenclature (ASTM D1418-22) / Rubber and latices—Nomenclature (ISO 1629:2013)
ASTM-D2000	Type BG (EU)	ASTM D2000 Classification System	Classified within ASTM D2000 Table X1.1 under Type BG (100°C 70h test, Class G oil swell) for polyether urethane; accelerated test temperatures serve classification rather than continuous service ratings.Ref: Standard Classification System for Rubber Products in Automotive Applications (ASTM D2000-21 / SAE J200:2021)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

4 Listed

Scroll horizontally for full alias classifications

Recognized Name / Alias	Classification	Technical Usage & Context
Polyether Urethane	Colloquial Alias	Colloquial or commercial industry synonym
Cast Polyether Polyurethane	Colloquial Alias	Colloquial or commercial industry synonym
PTMEG Urethane	Colloquial Alias	Colloquial or commercial industry synonym
EU Urethane	Colloquial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

3 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
ASTM International	ASTM D1418	Standard Practice for Rubber and Rubber Latices—NomenclatureSTANDARD · Edition: ASTM D1418-22	Specification Reference
ISO	ISO 1629	Rubber and latices — NomenclatureSTANDARD · Edition: ISO 1629:2013	Specification Reference
ASTM International	ASTM D2000	Standard Classification System for Rubber Products in Automotive ApplicationsSTANDARD · Edition: ASTM D2000-21	Specification Reference

Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.

Polyether Polyurethane (EU) Mechanical Properties

Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.

Temper / Condition:

Showing 2 of 2 conditions

Scroll horizontally for all conditions & tempers

Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Standard Product Form	Cast PTMEG-Based Polyether Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) · 70 °C Source values and qualifiers Compression Set (22h at 70°C): 22–38 % (RANGE)Good compression set resistance in continuous water immersion.ASTM D395 Method B / ISO 815-1Parker Hannifin Corporation, Engineered Materials Group — Parker Hannifin Corp. Catalog ORD 5700 (2018/2023), Section II (Basic O-Ring Elastomers: Table 2-2 & Figure 2-3), Section VII (Compatibility Tables) / ASTM D395-18 Method B	—	—	—	—	—	—	—	VERIFIED
Standard Product Form	Cast PTMEG-Based Polyether Vulcanizate (Post-Cured 16h at 100°C, 90 Shore A) Source values and qualifiers SHORE_A Hardness: 60–95 SHORE_A (RANGE)Spans 60 to 95 Shore A; 85–90 Shore A is standard for hydrocyclone and slurry pump impellers.Durometer Type A per ASTM D2240 / ISO 48-4 at 23°C.Parker Hannifin Corporation, Engineered Materials Group — Parker Hannifin Corp. Catalog ORD 5700 (2018/2023), Section II (Basic O-Ring Elastomers: Table 2-2 & Figure 2-3), Section VII (Compatibility Tables) / ASTM D395-18 Method B	—	—	—	—	—	—	60–95 SHORE_A	VERIFIED

Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.

Source: See fact-level citations

Polyether Polyurethane (EU) Processing & Fabrication

Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.

Source: Parker Hannifin Corporation, Engineered Materials Group

Machinability

Lathe turned with sharp ground high-speed steel tools; cryogenically machined with liquid nitrogen for complex seals.

Heat Treatment & Working Ranges

Post-cured in hot-air ovens at 100°C for 16 to 24 hours to achieve maximum mechanical property development.

Forming & Cold Working

Processed via two-component liquid casting or thermoplastic polyurethane (TPU) extrusion and injection molding with vacuum degassing.

Polyether Polyurethane (EU) Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for Polyether Polyurethane (EU). Comparable does not mean equivalent.

Scroll horizontally for relationship classifications & comparisons

Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status	Action
Polyester Polyurethane (AU)	rubber-and-elastomers	Close Equivalent	Deciding between polyurethanes: EU should always be chosen when continuous water immersion, high humidity, subsea, or slurry contact is present due to hydrolytic stability; AU is chosen for maximum dry sliding abrasion and fuel/oil resistance.Direct commercial substitution is generally permissible subject to certified Mill Test Report (MTR) confirmation for critical applications.	VERIFIED	Side-by-Side Compare →
Ethylene Propylene Diene Rubber (EPDM)	rubber-and-elastomers	Commonly Compared	Both materials resist water and weathering; EU delivers far higher tensile strength, cut resistance, and dynamic slurry wear endurance; EPDM operates at higher steam temperatures (+150°C vs +80°C).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED	Side-by-Side Compare →

Related Engineering & Metallurgy Guides

Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to Polyether Polyurethane (EU).

Material Selection18 min read

Types of Rubber: Elastomer Classification, Chemical Resistance & Selection Guide

Selecting the correct rubber is not a matter of choosing a generic flexible polymer—it requires matching molecular backbone chemistry to service temperature, chemical media polarity, dynamic fatigue, and compression set. This engineering guide classifies the 11 primary elastomer families, detailing their ASTM D1418 / ISO 1629 designations, mechanical performance envelopes, and rigorous selection algorithms.

Author: MatGrades Materials Engineering GroupRead Guide →

Sources

Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.

ASTM International, ISO & Elastomer Engineering Technical CommitteesParker O-Ring Handbook (Catalog ORD 5700) & Elastomer Engineering Selection Guide

Development BenchmarkSTANDARDS ORG

Global engineering seal benchmark establishing continuous operating temperature envelopes (Figure 2-3), elastomer property comparisons (Table 2-2), ASTM D395 Method B compression set benchmarks, and manufacturer engineering fluid compatibility selection ratings (distinguished from raw laboratory immersion coupons).

Issuing Body: Parker Hannifin Corporation, Engineered Materials GroupRevision: ORD 5700 (2018/2023)View Source Record ↗

ASTM International, ISO & Elastomer Engineering Technical CommitteesStandard Practice for Rubber and Rubber Latices—Nomenclature (ASTM D1418-22) / Rubber and latices—Nomenclature (ISO 1629:2013)

STANDARDS ORG

Authoritative international nomenclature defining rubber acronyms and classification families.

Issuing Body: ASTM International & ISO Technical Committee ISO/TC 45 (Rubber and Rubber Products)Revision: ASTM D1418-22 / ISO 1629:2013View Source Record ↗

ASTM International, ISO & Elastomer Engineering Technical CommitteesStandard Classification System for Rubber Products in Automotive Applications (ASTM D2000-21 / SAE J200:2021)

STANDARDS ORG

Standardized classification system establishing Type and Class designations and line callouts for vulcanized rubber compounds.

Issuing Body: ASTM International & SAE International Technical CommitteesRevision: ASTM D2000-21View Source Record ↗

Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.