# O-Ring Supply Co. - Industrial O-Ring Reference
> Authoritative B2B resource for O-ring selection, size standards, material comparison, and custom sealing support.

## What This Site Covers
- O-ring material guides: NBR, FKM, EPDM, VMQ, HNBR, PTFE, PU, CR, AFLAS, FEP encapsulated
- International size standards: AS568, ISO 3601, JIS B2401, DIN 3771, BS 4518, SMS 1588, NF T47-501, JASO F404
- Engineering hub: design guidance, installation, storage, selection by function, tolerances, and standards cross-reference
- Engineering tools: compression calculator, material selector, chemical compatibility guide, size converter
- Application guides: hydraulic, food, medical, aerospace, static flange seals, chemical-resistant, and 20+ industry use cases
- Technical blog: groove design, compression rate, material selection, installation, tolerance, hardness, color coding, selection checklist
- Case studies: oil and gas, pharmaceutical, food and beverage, hydraulic, automotive, semiconductor, aerospace, medical
- Manufacturing, quality certifications, engineering services, downloads, RFQ, and custom sealing

## Core Technical Guidance
- Static seal compression target: 15-25%
- Dynamic seal compression target: 10-20%
- Installation stretch limit: 3-5% of unmounted inside diameter for elastomers; 2-3% for PTFE and FFKM
- NBR temperature range: -40 C to +120 C
- FKM temperature range: -20 C to +200 C
- EPDM temperature range: -50 C to +150 C
- VMQ temperature range: -60 C to +230 C
- PTFE temperature range: -200 C to +260 C

## Business Profile
- Industrial O-ring manufacturer and engineering support partner
- ISO 9001:2015 certified
- Global supply for standard and custom sealing parts
- MOQ starts at 1 piece for many products
- Quote response target: within 24 hours
- Contact: yaoqingpu1983@gmail.com

## Purchasing & Quoting
- Request a quote at https://oringsupplyco.com/quote/ — typical response within 24 hours
- MOQ from 1 piece on many standard and custom sizes
- Sample requests: https://oringsupplyco.com/request-samples/
- Payment: PayPal, wire transfer (TT), and major credit cards accepted for qualified orders
- Standard lead time: 7-15 days; express 3-5 days when available
- Send drawings, AS568 dash numbers, ISO/JIS size IDs, or physical samples for fastest quoting

## Important URLs
- Homepage: https://oringsupplyco.com/
- Products: https://oringsupplyco.com/products/
- Size chart hub: https://oringsupplyco.com/size-chart/
- Engineering hub: https://oringsupplyco.com/engineering/
- Installation and storage guide: https://oringsupplyco.com/guides/o-ring-installation-storage/
- Seal selection by function: https://oringsupplyco.com/guides/seal-selection-by-function/
- Standards hub: https://oringsupplyco.com/standards/
- AS568 size chart: https://oringsupplyco.com/standards/as568/
- ISO 3601 sizes: https://oringsupplyco.com/standards/iso3601/
- JIS B 2401 sizes: https://oringsupplyco.com/standards/jis-b2401/
- Downloads hub: https://oringsupplyco.com/downloads/
- Engineering tools: https://oringsupplyco.com/tools/
- Compression calculator: https://oringsupplyco.com/tools/compression-calculator/
- Material selector: https://oringsupplyco.com/tools/material-selector/
- Chemical compatibility: https://oringsupplyco.com/tools/chemical-compatibility/
- Size converter: https://oringsupplyco.com/tools/size-converter/
- Industries: https://oringsupplyco.com/industries/
- Applications: https://oringsupplyco.com/applications/
- Fuel injector O-rings: https://oringsupplyco.com/applications/fuel-injector/
- Pool and spa O-rings: https://oringsupplyco.com/applications/pool-spa/
- Faucet and plumbing O-rings: https://oringsupplyco.com/applications/faucet-plumbing/
- Consumer and appliance O-rings: https://oringsupplyco.com/applications/consumer-appliance-o-rings/
- Static and flange seals: https://oringsupplyco.com/applications/static-flange-seals/
- O-ring boss (ORB) and face seal fittings: https://oringsupplyco.com/applications/o-ring-boss-fittings/
- Tri-clamp and sanitary seals: https://oringsupplyco.com/applications/tri-clamp-sanitary-seals/
- O-ring kits: https://oringsupplyco.com/products/kits/
- VMQ steam and autoclave seals: https://oringsupplyco.com/products/vmq/steam-autoclaves/
- FFKM semiconductor seals: https://oringsupplyco.com/products/ffkm/semiconductor/
- PU hydraulic seals: https://oringsupplyco.com/products/pu/hydraulic-seals/
- CR refrigeration seals: https://oringsupplyco.com/products/cr/refrigeration/
- Blog: https://oringsupplyco.com/blog/
- EV battery pack sealing (GB 38031): https://oringsupplyco.com/blog/ev-battery-pack-sealing-gb38031/
- Hydraulic fluid compatibility guide: https://oringsupplyco.com/blog/o-ring-hydraulic-fluid-compatibility/
- Engineering unit conversions (MPa, bar, psi): https://oringsupplyco.com/blog/seal-engineering-unit-conversions/
- O-ring selection checklist: https://oringsupplyco.com/blog/o-ring-selection-checklist/
- Case studies: https://oringsupplyco.com/case-studies/
- Oil and gas wellhead sealing: https://oringsupplyco.com/case-studies/oil-gas-wellhead-sealing/
- Pharmaceutical bioreactor silicone: https://oringsupplyco.com/case-studies/pharmaceutical-bioreactor-silicone/
- Food and beverage CIP EPDM: https://oringsupplyco.com/case-studies/food-beverage-cip-epdm/
- Hydraulic cylinder cold start: https://oringsupplyco.com/case-studies/hydraulic-cylinder-cold-start/
- Custom seals: https://oringsupplyco.com/custom-service/
- Manufacturing: https://oringsupplyco.com/manufacturing/
- Quality certifications: https://oringsupplyco.com/quality-certifications/
- Engineering services: https://oringsupplyco.com/engineering-services/
- Quote request: https://oringsupplyco.com/quote/
- Sample request: https://oringsupplyco.com/request-samples/
- Contact: https://oringsupplyco.com/contact/