Skeleton Oil Seals
TC / TB / SC / SB rotary shaft seals for pumps, gearboxes and motors.
13,544 sizes · NBR / FKM / VMQView 13,544 sizes →
Oil seals · O-rings · custom rubber seals
Sealing parts that keep your equipment running
Rotary shaft seals, O-rings, bonded washers and made-to-drawing rubber parts for equipment manufacturers, repair shops and distributors. Send a model or a drawing and get specs, MOQ and lead time straight on WhatsApp.
6Product families
13,544model entries · NBR / FKM / VMQ
OD 10–920 mmouter diameter coverage
Drawing / sampleCustom development
Product range
Find the right seal by application
Six families, organised the way buyers actually search — material and process details come one level deeper.
O-Rings & Rubber Rings
Metric and imperial O-rings, assorted sizes and compounds.
Size chart on requestView range →
Bonded Washers
Rubber-bonded metal washers (Dowty seals) for hydraulic fittings.
Size chart on requestView range →
Copper Crush Washers
Annealed copper sealing washers for high-temperature joints.
Size chart on requestView range →
Hydraulic & U-Cup Seals
Rod, piston and U-cup seals for cylinders and hydraulic systems.
Size chart on requestView range →
Custom Moulded Rubber Parts
Made to drawing or sample, with tooling and prototyping support.
Size chart on requestView range →
Size finder
Search by model number, not by brochure
Your real oil-seal size lists are built into this site — 13,544 sizes across NBR, FKM and VMQ. Filter by type code, ID, OD or width, and quote any row straight to WhatsApp.
5,195NBR black
3,154FKM fluoro
5,195VMQ silicone*
Real model numbers from your catalogue
TC12 × 40 × 8TC19 × 52 × 8TC20 × 62 × 10TC24 × 72 × 11TC25 × 80 × 10TC30 × 90 × 7Format: type code + d × D × W (mm). TC = double lip with spring, rubber-covered OD. VMQ is made to order in the same size system.
Sizes come from your spreadsheets. Prices, MOQ and lead time are never published — they are confirmed per enquiry.
Popular items
Frequently requested parts
Every card has its own Quick Quote button — the product name is pre-filled into the WhatsApp message, so your customer never has to describe the part.
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Applications
Start with the failure, not the part number
Leakage, heat ageing and unplanned downtime are the real cost. Working conditions first, dimensions second.
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Automotive & Transmissions
Wheel hubs, crankshafts, gearboxes and differentials — where heat, oil and shaft runout destroy a cheap seal long before the service interval.
Typical parts: Rotary shaft seals, high-temp FKM grades
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Hydraulics & Pneumatics
Cylinders, valves and fittings that leak under pressure pulses. Correct lip geometry and compound matter more than catalogue price.
Typical parts: U-cup / rod seals, bonded washers, O-rings
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Pumps, Gearboxes & Motors
Unplanned downtime costs far more than the seal. We size by shaft diameter, speed and medium, not by a generic part number.
Typical parts: TC / TB skeleton oil seals, custom sizes
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Agriculture & Construction
Mud, dust and shock loads demand double-lip or cassette solutions with the right hardness and abrasion resistance.
Typical parts: Heavy-duty oil seals, dust lips, custom moulded parts
Material selection
Four compounds, one comparison
Typical temperature range, oil resistance and common uses for NBR, FKM, EPDM and VMQ.
| Property | NBR 丁腈橡胶 | FKM 氟橡胶 | EPDM 三元乙丙橡胶 | VMQ 硅橡胶 |
|---|---|---|---|---|
| Temperature range | -30°C ~ +120°C | -20°C ~ +250°C | -50°C ~ +150°C | -60°C ~ +230°C |
| Hardness (Shore A) | 40–90 Shore A | 55–90 Shore A | 40–90 Shore A | 20–80 Shore A |
| Oil resistance | Excellent — mineral oil, lubricants | Excellent — all oil types | Poor — avoid mineral oil | Fair — avoid polar oils |
| Chemical resistance | Fair | Excellent — strong acids & solvents | Good — polar solvents, acids | Fair |
| Ozone / weathering | Poor (needs antiozonant) | Excellent | Excellent | Excellent |
| Relative cost | Low | High (8–15× NBR) | Low–medium | Medium |
| Typical applications | Hydraulic seals, oil seals, fuel-system O-rings | High-temp oil seals, chemical valves, aerospace seals | Water systems, brake fluid, outdoor weathering | Food-grade, medical, high-temp insulation |
Typical industry values for guidance only. Confirm the compound and test requirements for your application before ordering.
Why work with us
Verifiable facts instead of adjectives
01
Made to drawing or sample
Custom profiles, non-standard sizes and special compounds. Tooling and sampling supported.
02
Compound matched to duty
NBR, FKM, EPDM, VMQ and more — selected by temperature, medium and pressure.
03
Batch traceability
Incoming material checks, in-process inspection and final QC before packing.
04
One channel, direct answer
No forms and no ticket system. WhatsApp puts you straight through to the person who quotes your part.
Not sure which compound or profile fits? Send the size, medium, temperature and shaft speed on WhatsApp — we will confirm the specification before quoting.
Quality
Certification & inspection
Copies of applicable certificates, material declarations and inspection records can be provided for your order.
ISO 9001
Quality management system documentation available on request.
RoHS / REACH
Material compliance declarations and test reports available on request.
Incoming / final QC
Hardness, dimension and appearance inspection records available on request.
FAQ
Questions buyers ask before ordering
What is your MOQ?
MOQ depends on the item, size and whether a new mould is needed. Send the model, dimensions and target quantity on WhatsApp and we will confirm it in writing.
Can you make custom or non-standard sizes?
Yes. Send a drawing, a sample, or the d × D × W dimensions plus the working medium and temperature. We will confirm tooling, sampling and MOQ on WhatsApp.
Which materials do you offer?
NBR, FKM, EPDM, VMQ, HNBR, PU and copper are commonly available. See the Materials page for temperature, hardness and media compatibility, then tell us the working conditions.
Which standards do the seals follow?
Rotary shaft seals are commonly specified to DIN 3760 / ISO 6194 and O-rings to ISO 3601 / AS568. Confirm the exact standard and tolerance you need when enquiring.
Can I get samples or a test report?
Ask on WhatsApp with the model and quantity. Sample policy, available certificates and third-party test reports will be confirmed per order.
What is the lead time?
Lead time depends on whether the size is in stock and whether tooling is required. Confirm the current schedule on WhatsApp before placing an order.
How do I request a quote?
Click any Chat on WhatsApp button on this site. On product pages the message is pre-filled with the product name, so you only need to add size and quantity and press send.
Do you ship internationally?
Tell us the destination country and quantity on WhatsApp and we will confirm packing, shipping options and Incoterms for your order.
Have a size chart or a drawing?
Open WhatsApp with a pre-filled message, attach your drawing and tell us the quantity. We reply with specs, MOQ and lead time — no form, no waiting for a confirmation email.
Mon–Sat 8:00–18:00 (GMT+8) · Reply within 1 business day