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Industrial O-Ring Products

AS568 standard O-rings in NBR 70A and FKM/Viton materials. Focused product line, consistent quality, flexible ordering.

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01
AS568 Standard (Inch Sizes)

NBR 70A O-Rings

Most Popular
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NBR 70A is the most widely used O-ring material for general industrial applications. It provides excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. Our NBR O-rings conform to AS568 dimensional standards with hardness tolerance of 70 ±5 Shore A.

Material
Nitrile Butadiene Rubber
Hardness
70 Shore A (±5)
Color
Black
Temp Range
−40°C to +120°C
Common Applications
General hydraulics & pneumaticsWater and air sealingPetroleum-based oils and fuelsMRO replacement parts
02
AS568 Standard (Inch Sizes)

FKM / Viton O-Rings

High Performance
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FKM (also known by the brand name Viton®) offers superior resistance to high temperatures, aggressive chemicals, fuels, and oils. It is the preferred choice when NBR is insufficient. Available in the full AS568 size range.

Material
Fluorocarbon Rubber (FKM)
Hardness
70 Shore A (±5)
Color
Brown / Black
Temp Range
−20°C to +200°C
Common Applications
High-temperature sealingChemical and solvent resistanceFuel systems and petroleumAerospace and automotive
03
Metric Standard (DIN / ISO 3601)

Metric O-Rings

Available on Request
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Metric O-rings following DIN 3771 / ISO 3601 standards. Available on request alongside AS568 orders — useful for customers who need both inch and metric sizes in a single shipment.

Material
NBR 70A / FKM
Hardness
70 Shore A
Color
Black / Brown
Temp Range
Same as above by material
Common Applications
European equipmentAsian machineryMixed metric/inch orders
Ordering Info

Flexible Ordering — Mixed Sizes Welcome

One of the key advantages of working with FTX SPS Tech is our flexible MOQ policy. You do not need to order large quantities of a single size.

We accept orders that combine multiple AS568 sizes — for example, a mix of -010, -112, -214, and -325 — all shipped together in one carton or pallet. This is particularly useful for:

  • MRO distributors building a sealing inventory
  • Industrial supply companies serving diverse equipment types
  • Small equipment manufacturers with varied seal requirements
  • Trial orders to evaluate quality before scaling up
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Collection of AS568 O-rings in NBR and FKM materials, various sizes