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Custom O-Rings & Industrial Sealing Solutions

Backup Parts is a global supplier of standard and custom O-rings, sealing components, and rubber parts. We support industrial maintenance, OEM manufacturing, and replacement markets with stable supply and export-ready service.

Request Quotation View Capabilities Material Options
Standard O-rings and sealing components
Fast Response Typical quote in 24–48 hours for clear specs.
Custom & Standard Metric / Inch sizes, compound selection, drawings supported.
Export Friendly Clear communication, packing support, documentation ready.

How we help buyers

B2B Supplier

Share your specs and application conditions, and we’ll recommend materials and provide an efficient quotation.

  • Material guidance NBR / FKM / EPDM options based on oil, fuel, water, steam, and temperature.
  • Custom sizes supported ID / OD / CS, tolerance requirements, and special compounds available.
  • Quality & packaging Sorting, labeling, and export packaging for repeatable procurement.
Custom O-rings Sealing kits Rubber parts OEM support

Factory Floor · QC & Packing

QC / Packing

For every order, we confirm material specifications, run key-dimension sampling (ID / OD / CS), and keep batches traceable for repeat purchasing and after-sales reference. Additional services we support，Maintenance kits (O-ring kits) customized to your equipment / BOM，Bagging by quantity, barcode/label formats, and carton marking for warehouse picking Small-batch and urgent sampling for validation before bulk production

Packing & labeling
Packing & labeling
Sorting by specs
Sorting by specs

Typical Applications

  • Hydraulic systems
  • Pumps and valves
  • Fluid and gas sealing
  • Automotive maintenance
  • Industrial machinery

Real stories (recent)

“We only needed 20 pcs.” Customer sent a blurry photo + caliper reading. We matched the size and shipped a small batch first—then it became a repeat order.
“Same size, still leaking.” Turned out the compound was wrong for the oil & temperature. We switched material and the leak stopped on the next maintenance cycle.
“Our team kept mixing inch & metric.” We helped label and sort by standard/size, so reordering is now basically copy-paste.

All stories are anonymized.

Guides & Knowledge

Guides

Practical checklists to speed up quoting and reduce mistakes.

How to Choose a Custom Robotic Gripper Quick checklist + what info to send for accurate selection.
O-Ring Buying Guide Materials, sizing, tolerances, and what to confirm before you order.
O-Ring Quote Checklist ID / OD / CS, quantity, medium, temperature range, drawings/photos.
    • Hydraulic Oil Leak Fix & O-Ring Guide (EN/IT) Checklist rapida perdite olio + guida misure/materiali (DIN/ISO) per manutenzione oleodinamica.
    Robotic Gripper Drops & Slips: Root Cause Checklist (2026) Troubleshooting matrix + fixes for intermittent drops/slip: friction, compliance, acceleration, vacuum leakage, sensing.
    Robotic Gripper Glossary & FAQ (2026): AI-friendly Definitions Clear terms + Q&A for AI/search: friction margin, real contact area, compliance, form-fit, vacuum edge leakage + RFQ checklist.
    O-Ring Failure Modes (2026): Leak, Swell, Crack, Extrusion — Fix Checklist 10-minute troubleshooting matrix: identify the failure mode and the first fix (ID×CS, material vs medium/temp, groove, back-up ring).
    How to Measure an O-Ring (2026): ID, OD, CS + Groove Checklist No drawing needed — avoid old-ring measurement traps, check groove width/depth & burrs, and copy/paste a fast RFQ.
    O-Ring Installation Mistakes (2026): Twist, Cuts, Spiral Failure — Leak Prevention Checklist Stop “leak after replacement”: deburr the groove, avoid twisting, protect edges/threads, and use a simple install checklist.
    O-Ring Storage & Shelf Life (2026): Aging Signs, Risk Score & Checklist Prevent early leaks from old stock: spot cracks/stickiness/flat spots, score storage risk, and apply FIFO inventory.
    O-Ring Incoming Inspection (2026): Sampling + Traceability Checklist Receiving QC made simple: visual check, ID×CS sampling, COA/batch traceability, labeling, and storage rules.
    Why Does My O-Ring Leak Even After Replacement? (2026) 9 Causes + Quick Fix A fault board: symptom → likely cause → first fix (groove damage, cuts, twist, contamination, extrusion gap, sizing traps).
    O-Ring Extrusion & Nibbling (2026): Signs, Root Causes, and Fix Checklist Chewed edges or an extruded lip? Diagnose extrusion risk (clearance gap + pressure spikes) and apply the fastest fixes (back-up ring, gap control, groove checks).
    O-Ring Swelling & Softening (膨胀/变软) Why O-rings grow, get sticky or weak — fast diagnosis checklist.
    O-Ring Abrasion & Wear Marks (磨损) Shiny wear bands, scratches, rubber dust — stop early wear leaks.
    O-Ring Installation Damage (安装损伤) Cuts, pinching, twists — why a new ring leaks immediately.
    O-Ring Heat Hardening & Cracking (高温硬化/龟裂) Brittle seals and fine cracks — find heat spikes and prevent repeats.
    O-Ring Dieseling / Pitting (柴油效应坑洞) Tiny pits & burn marks in hydraulics — trapped air + rapid pressurization.
    O-Ring Spiral Failure (动态扭转螺旋撕裂) Helical tear pattern in dynamic seals — diagnose twisting drivers fast.
    O-Ring Cold Leak (低温冷启动漏) Leaks when cold, stops when warm — shrink + stiffness checklist.
    O-Ring Over-Compression (过度压缩) Pinched edges & short seal life — stop over-squeeze damage.
    O-Ring Ozone/UV Cracking (臭氧/紫外龟裂) Surface cracks from outdoor/storage exposure — prevent repeats.
    O-Ring Rolling / Walk-Out (滚动走位) Intermittent leaks + one-sided wear — ring moves in the groove.
    Material guide Sizing Tolerances Quote checklist

    This section is our small knowledge base for engineers and buyers. We keep it updated as new questions come in—save it for future projects.

    Want more sealing tips? Browse our latest guides and bookmark this page.

    Factory Floor • QC & Packing

    Incoming material check, key-dimension sampling, batch traceability, and export-ready packing.

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    O-ring production on the factory floor
    On-site Production Making
    Molding / trimming / in-process inspection for stable quality.
    Packing and labeling for shipment
    Labeling & Packing Packing
    Label verification + packing check before shipment to reduce receiving issues.
    QC sampling and batch traceability
    QC Sampling & Traceability QC
    Key dimensions sampled (ID/OD/CS) with lot tracking for repeat orders.

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    Contact

    Email: info@backup-parts.com

    Business: O-rings, sealing components, custom rubber parts

    Service: Quotation support, material guidance, export-ready packing

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