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Submit size / material info
Send dash numbers or ID/OD/CS plus the material and temperature preferences you have.
Find O-rings Fast · 130,000+ Sizes
Online Matching for O-Ring Sizes & Materials
With 430M+ o-rings in stock across NBR, FKM, EPDM, silicone, FFKM, and PTFE, we match your dash list or dimension sheet within 1–3 business days and include material/temperature pointers for your review.
Product line spans O-rings, X-rings, oil seals, O-ring repair kits, rubber cords, rubber gaskets, PTFE O-rings, plus NBR / FKM / EPDM / silicone / FFKM options.
430M+ pieces on hand
1–3 day list response
72h dispatch for stocked items
O-Ring Size Table
Find O-Rings by Material
Select the right elastomer window
Pick the material that fits your media/temperature range; each card routes to size tables and pricing.
Quickly review O-rings, X-rings, oil seals, rubber cords, gaskets, PTFE O-rings, and material guides for NBR/HNBR/FKM/EPDM/silicone/FFKM.
NBR Rubber O-Rings
−40 °C to +120 °C (−40 °F to +250 °F)
Resists mineral oils and hydraulic fluids; general industrial O-rings. Not for aromatic/chlorinated hydrocarbons.
EPDM O-Rings
−50 °C to +150 °C (−60 °F to +300 °F)
Hot water/steam and weather resistant; ideal for HVAC/valves. Not for mineral oils or fuels.
FKM / Viton O-Rings
−20 °C to +200 °C (−5 °F to +400 °F)
Fuel/chemical/high-pressure sealing; stocked AS568 dash O-rings with batch labels. Avoid hot water/steam.
FFKM / PTFE O-Rings
−15 °C to +327 °C (0 °F to +620 °F)
Perfluoroelastomer/PTFE for aggressive media and semiconductor tools; made-to-order O-rings.
Silicone O-Rings (VMQ)
−60 °C to +230 °C (−75 °F to +450 °F)
Food/pharma-grade; SIP/CIP compatible. Not for silicone oils/aromatic fuels.
PTFE Encapsulated Rings
−200 °C to +260 °C (−325 °F to +500 °F)
Low-friction, chemically inert O-rings for ultra-pure or corrosive lines.
AS568 Size Chart
AS568 O-ring size chart · Mixed MOQ 1
Search AS568 dash or metric O-rings by ID/OD/CS; filter by material, hardness, color, certificates. Download the Excel/PDF chart or submit your dash list for pricing and ship dates (stocked items dispatch in 72h).
| Spec | Material | Availability | |
|---|---|---|---|
| AS568-110 | NBR | In stock | Submit size table |
| AS568-214 | FKM | Batch ready | Submit size table |
| Metric 28×3 | Silicone | Samples in 3 days | Submit size table |
| PTFE C-214 | PTFE | Custom 5 days | Submit size table |
Our Range of O-Rings
Standard, custom, coated, and industry-fit O-rings
High-density O-ring information to match search intent: sizes, materials, applications, and industries in one page.
Standard O-Rings (AS568/ISO 3601)
130k+ dash and metric sizes for pumps, valves, hydraulics, pneumatics, and general industry.
Custom & Non-Standard O-Rings
Special IDs/CS, large diameters, custom hardness/colors, and profile variations for unique fits.
Coatings & Surface Treatments
PTFE/Teflon®, anti-friction, and hydrophobic coatings to reduce wear and improve chemical resistance.
Material Options
NBR, FKM/Viton®, EPDM, VMQ/Silicone, HNBR, FFKM, PTFE — matched to media, temperature, and compliance needs.
Size Coverage
From miniature O-rings to large diameters; AS/BS dash sizes plus metric ranges with tight tolerances.
Industry Fit
Solutions for hydraulics, food & pharma, semiconductor, oil & gas, energy, and manufacturing lines.
Quality & Traceability
Batch-labeled packing, photos, and documentation; engineer review within 24h.
In-demand O-Ring Kits
Popular AS568 assortments in NBR, Viton, EPDM, Silicone
Maintenance and assortment kits ship with bulk O-rings in one order; mixed MOQ 1 with labels and QC docs.
AS568 NBR O-Ring Kit · 419 Pieces
- Sizes
- AS568-006 to -218
- Material
- NBR 70 Shore A
- Quantity
- 419 pcs · 32 sizes
- How to order
- Stocked, labeled trays; ships with bulk O-rings.
Viton® FKM High-Temp Kit · 225 Pieces
- Sizes
- AS568-010 to -150
- Material
- Viton / FKM 75 Shore A
- Quantity
- 225 pcs · 18 sizes
- How to order
- Mix with bulk FKM O-rings in one shipment.
FDA Silicone VMQ Kit · 300 Pieces
- Sizes
- AS568-005 to -176
- Material
- Silicone 60 Shore A
- Quantity
- 300 pcs · 24 sizes
- How to order
- Sample-ready kits with batch labels and QC docs.
Industry solutions
Programs for regulated sectors
Semiconductor Equipment
FFKM / PTFE O-rings for plasma, vacuum, CMP tools; cleanroom lots with wafer-tool size tables.
Food & Pharma Lines
Silicone & EPDM O-rings for SIP/CIP; FDA-grade packing, labels, and batch photos for traceability.
Oilfield & Petrochemical
FKM / HNBR O-rings for valves, pumps, downhole tools; small lots before bulk replenishment.
Technical resources & downloads
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O-Ring Size Table (Excel/PDF)
Download the latest AS568 dash chart and submit your size table for a 72h dispatch plan.
Download -
O-Ring Size Calculator
Calculate groove depth, compression, and stretch; link to AS568 chart and quote.
Open calculator -
Materials Library
NBR/FKM/EPDM/Silicone/HNBR/FFKM material windows with batch labels.
Open link -
Resources Hub & Cross-Reference
Technical guides, Parker cross-reference, and downloads are grouped here.
Open link
Why choose us
Why choose us
State inventory, response time, and transparency so customers decide faster.
Transparent inventory
130,000+ sizes and 430M+ pieces so you instantly know what ships now.
Fast response
1–3 day turnaround on size lists with 72h dispatch for stocked o rings.
Complete context
Replies include material, temperature, and usage notes for your internal review.
Order history kept
We log size/material/source so reordering the same spec is effortless.
Process
Premium O-Ring coordination process
Size/material submission, matching lists, order confirmation, and clear tracking keep future orders predictable.
2
Receive matching list
Within 1–3 days we return identical or alternate specs with material/temperature notes for your team.
3
Confirm order & timing
Lock quantities, packaging, and shipping cadence—stocked items leave within 72h.
4
Tracking & optional photos
We keep full order records and can share packing or carton photos whenever requested.
Send your O-ring size table to lock batches and dispatch dates
Submit your AS568 dash list or metric size table; engineers reply within 24h with materials, batch labels, and estimated dispatch.
- Phone +86-139-0000-0000
- Email sales@o-ringseal.com
- WhatsApp +86-139-0000-0000
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Support hours
Under 12h response • Mon–Sat GMT+8