73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
O-ring size reference in mm and inch
NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
O-ring measurement guide in mm and inch
    73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
    O-ring size reference in mm and inch
    NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
    O-ring measurement guide in mm and inch
73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
O-ring size reference in mm and inch
NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
O-ring measurement guide in mm and inch
73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
O-ring size reference in mm and inch
NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
O-ring measurement guide in mm and inch
    73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
    O-ring size reference in mm and inch
    NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
    O-ring measurement guide in mm and inch
73.90 × 3.55 mm (2.909 × 0.140 in) NBR O-ring
O-ring size reference in mm and inch
NBR O-ring product detail for 73.90 × 3.55 mm (2.909 × 0.140 in)
O-ring measurement guide in mm and inch

O-Ring 73.90 × 3.55 mm · NBR · 90A

73.90 × 3.55 mmNBR90A

Online pack sizes: 1000 pcs / 100 pcs / 250 pcs / 500 pcs.

MOQ: lowest listed pack. For quantities above the listed packs, request a quote.

$322.48
$322.48
/ pack
1000 pcs / 100 pcs / 250 pcs / 500 pcs available
$0.32 / pc · MOQ 100 pcs · Pack total $322.48
Shipping calculated at checkout.
Pack Size:

Need 1000+ pcs or a custom size?

Better pricing for volume orders

Custom by Size or Drawing
Need Help?
Custom by Size or Drawing MOQ 1000 pcs support@oxxring.com

Quick Specifications

Inner Diameter (ID)73.90 mm
Cross Section (CS)3.55 mm
MaterialNBR
Hardness90A
Pack Options1000 pcs / 100 pcs / 250 pcs / 500 pcs
MOQLowest listed pack
Larger QuantitiesRequest a quote above the listed packs
Available in the listed pack sizes

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 NBR right for your needs?

NBR (nitrile rubber) is a practical choice for general sealing where oil, grease, or fuel resistance matters.

Good for

  • Oil & fuel contact
  • General sealing jobs
  • Automotive / machinery use

Not recommended for

  • Ozone / UV exposure
  • Long-term outdoor use

Common Applications

Hydraulic fittingsPumps & valvesAutomotive repairGeneral workshop sealing

Need 1000+ pcs or a custom size?

Custom by size or drawing available. Better pricing for volume orders.

Custom by Size or Drawing