Rugged Urethane O Rings Size Four Five One Seventy D Shore Built For Heavy Hydraulic Work Strong Against Mild Acids Rock Solid Six Thousand Psi Tear Resistance Guaranteed Long Lasting Seals Pack Of One Hundred

Heavy Duty 100 Pack Urethane O Rings for Hydraulic Seals
✔️ 70A Cast Polyurethane 11x11.5x0.25 Inches (279.4x292.1x6.35 MM)

Packaged in quantities of one hundred, these cast polyurethane o rings deliver heavy duty sealing performance for demanding hydraulic systems and industrial machinery. They handle high pressure environments while resisting abrasion, making them a reliable choice for piston rod wipers, industrial wheels, roll covers, and heavy equipment cushioning where durable elastomer replacements are needed.

✅ Tensile strength reaches six thousand psi for tough wear resistance
✅ Elongation range spans three hundred fifty to six hundred fifty percent
✅ Compression set stays between ten and twenty five percent under load
✅ Resists mineral oils, petroleum products, and light chemical mixes

💡 What limits the service life of heavy duty hydraulic piston seals?

Standard rubber compounds degrade quickly under abrasive conditions, so choosing cast elastomers makes a handy upgrade for demanding machinery.

- High tensile capacity stops extrusion damage when system pressure surges

- Excellent compression resistance keeps the contact surface tight against grooves

- Balanced polymer structure shrinks thermal expansion during continuous friction cycles

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