18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
O-ring size reference in mm and inch
EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
O-ring measurement guide in mm and inch
    18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
    O-ring size reference in mm and inch
    EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
    O-ring measurement guide in mm and inch
18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
O-ring size reference in mm and inch
EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
O-ring measurement guide in mm and inch
18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
O-ring size reference in mm and inch
EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
O-ring measurement guide in mm and inch
    18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
    O-ring size reference in mm and inch
    EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
    O-ring measurement guide in mm and inch
18.77 × 1.78 mm (0.739 × 0.070 in) EPDM O-ring
O-ring size reference in mm and inch
EPDM O-ring product detail for 18.77 × 1.78 mm (0.739 × 0.070 in)
O-ring measurement guide in mm and inch

O-Ring 18.77 × 1.78 mm · EPDM · 80A

18.77 × 1.78 mmEPDM80A

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Quick Specifications

Inner Diameter (ID)18.77 mm
Cross Section (CS)1.78 mm
MaterialEPDM
Hardness80A
Purchase ModeQuote required
Pack OptionsContact us
Quote required for this specification

Not sure about the size?

Measure ID and CS

Match the Inner Diameter (ID) and Cross Section (CS) to your old O-ring before ordering.

Then choose the pack size that fits your needs.

View Size Guide How to Measure

Is EPDM right for your needs?

EPDM is commonly chosen for water, steam, and outdoor sealing where weather resistance matters.

Good for

  • Water & steam
  • Weather / outdoor exposure
  • Brake system style use

Not recommended for

  • Oil / fuel contact
  • Petroleum-based fluids

Common Applications

Water systemsOutdoor enclosuresPipe sealingGeneral maintenance

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