HTGR 71x88x8mm NBR Internal Skeleton Oil Seal For Automotive Engine & Transmission
Model / SKU: VKEFOT-HTGR-71-88-8-NBR
This aftermarket HTGR internal skeleton oil seal 71x88x8mm in brown NBR, designed for automotive engine, transmission and rear axle sealing. For automotive repair and parts distributors; Lead Time: 7–15 days — RFQ with size, qty and destination.
Tags: 71x88x8mm, HTGR oil seal, internal skeleton shaft seal, automotive engine transmission, brown NBR oil seal
Product photos
Key specs: Inner diameter mm: 71 | Outer diameter mm: 88 | Height mm: 8 | Material: NBR | Material: NBR | Structure: HTGR type double lip internal skeleton oil seal with right-hand oil return thread | specifications: 71x88x8mm | Material: NBR
- Inner diameter mm: 71
- Outer diameter mm: 88
- Height mm: 8
- Material: NBR
- Material: NBR
- Structure: HTGR type double lip internal skeleton oil seal with right-hand oil return thread
- specifications: 71x88x8mm
- Material: NBR
- Structure: HTGR type double lip internal skeleton oil seal with right-hand oil return thread
- Size: 71x88x8mm
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Material | NBR |
| Structure | HTGR type double lip internal skeleton oil seal with right-hand oil return thread |
| Size | 71x88x8mm |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: MOQ: Depends on spec; typically 100–5,000 pcs | Lead Time: 7–15 days
Product details
This aftermarket HTGR type double lip oil seal 71x88x8mm is a rotary shaft seal built for automotive engine, transmission and rear axle sealing applications.
Buyers sourcing automotive shaft seals can submit RFQ with dimension, quantity and destination country. Lead Time: 7–15 days.
Features & Benefits
HTGR profile with right-hand internal oil return thread pumps leaked oil back into the housing, reduces oil seepage under continuous shaft rotation.
Double lip design with garter spring combines primary oil retention and secondary dust exclusion for reliable sealing performance.
NBR rubber lip delivers good oil resistance and wear resistance under standard automotive operating conditions.
Internal metal skeleton provides stable housing fit and radial rigidity for rotating shaft applications.
Verify dimension and shaft surface condition before installation, this seal is aftermarket replacement, not genuine OEM part.
- MOQ：Depends on spec; typically 100–5,000 pcs. Lead Time: 7–15 days. This SKU quantity confirmed on quotation.
Factory standard options, confirm on RFQ.
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia.
Material & Process
Sealing lip material: NBR nitrile rubber, typical working temperature -30°C to +100°C, short term peak up to +120°C, confirm compound grade with RFQ.
Steel internal skeleton bonded with NBR rubber, right-hand helical oil return thread, brown finish.
Applications & Compatibility
Commonly used for automotive engine, transmission and rear axle rotary shaft sealing, also suitable for general industrial rotating shaft applications.
Aftermarket replacement. Verify shaft diameter, housing bore and dimension before order.
Selection & Installation
Selection Tips
Confirm dimension 71x88x8mm, match material to your lubricant and working temperature.
Installation Steps
- Clean shaft and housing bore completely, remove burrs, old seal residue and dirt.
- Protect sealing lips carefully to avoid scratches on shaft surface during installation.
- Press the oil seal evenly, keep perpendicular to housing.
- Do not strike rubber body or hammer directly on seal surface.
- After assembly, rotate shaft manually and inspect for oil leakage.
Packaging & Delivery
Standard neutral polybag + export carton. Normally 50–200 pcs per carton, adjustable.
- Lead Time：7–15 days for this standard spec.
Samples and small trial lots for stocked sizes; freight confirmed on RFQ.
Send an inquiry with size (ID×OD×height in mm), quantity, destination and duty for a firm lead time.
FAQ
I only have a competitor/OEM part number—can you cross-reference?
Yes. Send the reference PN, ID×OD×height in mm, and duty (media, temperature, pressure, speed). We match equivalents in the catalog; the Cross Reference page also searches by keyword. Final selection follows drawing and duty confirmation — do not order from a photo alone.
Do you support OEM/ODM, private packing and marking?
Yes — OEM/ODM from drawings or samples, plus agreed packing and marking. Share target-market compliance needs and annual volume; RFQ confirms process, tooling cost and cadence. VKEFOT is the export brand of the Xingtai factory, not a trading desk.
TC vs TB oil seal: which should I specify?
For a rotary shaft that needs a dust lip plus oil lip, start with TC (rubber-covered dual-lip is common); TB is typical when a semi-metal case needs a stiffer bore fit. Shaft diameter, housing, runout and dust still decide. Send ID×OD×height in mm and speed on the RFQ — not only a competitor photo.
NBR vs FKM oil seal for hot engine oil?
Continuous engine-oil duty near 120°C or fuel exposure should be reviewed as FKM; general mineral oil at moderate temperature and cost-sensitive repair jobs often stay NBR. Brown color is not proof of FKM. The quote names the grade and temperature limit — do not order by color.
Oil seal vs O-ring: when do I use which?
Use a metal-cased radial shaft (skeleton) oil seal for rotating shafts; use an O-ring for static glands or reciprocating grooves. An O-ring on a rotary shaft wears out quickly. VKEFOT makes both — state motion type (rotary/static/reciprocating) and ID×OD×section on the RFQ.
Cassette seal vs dual-lip TC for dusty construction equipment?
Ag gearboxes and construction travel shafts with mud and long service intervals should be reviewed as cassette/combined seals; many automotive hub repair jobs stay dual-lip TC. Cassette packs are thicker and need different bore and axial space. A job-site photo is not enough — send ID×OD×height.
Xingtai oil seal factory vs trading company — how do I tell?
VKEFOT is the export brand of Xingtai Hanchi Intelligent Technology Co., Ltd. Mixing, vulcanization and outgoing inspection run in Xingtai, then goods export to Europe, North America, the Middle East and Southeast Asia. A trading desk usually cannot change compound or cut tooling. For OEM drawings, ask who runs the process and QC — not only catalog price.
What is a skeleton / radial shaft oil seal?
A skeleton oil seal is a metal-cased radial shaft seal: the rubber lip rides the shaft and the case holds interference in the bore. Common styles include TC, TB and TA. Minimum spec is ID×OD×height in mm, compound and duty. VKEFOT catalogs automotive and industrial shaft seals; trust the product-page dimensions.
What do ID, OD and height mean on an oil seal RFQ?
ID is inside diameter (shaft), OD is outside diameter (bore), height is axial width, all in millimetres. Missing any one blocks a cross-reference. Example: 56×112×8/10 means 56 mm ID, 112 mm OD, 8/10 mm height. Put those three numbers and the compound on the RFQ.
Which oil seal for an automotive wheel hub or differential pinion?
Hub repair jobs often use dual-lip TC; differential pinion shafts often need a secondary lip or split height (e.g. 8/10 or 12/22 mm). Use measured or OEM dimensions — not a marketplace title. VKEFOT application pages cover drivetrains and hubs; send an OEM number or ID×OD×height on the RFQ.
How to select oil seals for ag gearbox and PTO shafts?
Ag gearboxes and PTO shafts see dust and shock — prefer a dust lip or cassette, with NBR or FKM matched to gear oil and temperature. Do not force a passenger-car hub seal onto a PTO shaft. Send shaft, bore, height and whether mud/water is present, then RFQ.
What matters for pump, valve and compressor shaft seals?
Match media (oil, water, gas) and temperature first, then lip style and compound; do not default to cheap NBR for high speed or dry running. Put shaft runout and eccentricity on the RFQ. VKEFOT application cases include pumps, valves and compressors — still use measured sizes.
Does a brown oil seal mean it is FKM?
No. Brown NBR is common; color is not proof of FKM. For heat or fuel duty, write temperature and media on the RFQ so the factory names the grade. Ordering by color is a frequent cause of early leak.
Can you quote an oil seal from a photo only?
Not as a firm quote. We need at least ID×OD×height in mm, ideally compound and speed. A photo can show lip count and case style; it does not replace dimensions. Incomplete RFQs get a request for those three numbers before price.
If a new oil seal leaks quickly, is it always a bad seal?
Not always. Rough shaft finish, runout, cocked installation or the wrong compound also leak early. Check size and media/temperature match before blaming the part, then inspect the journal. Note time-to-fail (e.g. 50 hours) on the RFQ so we diagnose — do not just buy a cheaper seal.
What is needed for private-label OEM packing of oil seals?
Private packing and marking need annual volume, target-market compliance and artwork; tooling cost and cadence are confirmed on the RFQ — not a one-line “please OEM”. VKEFOT runs OEM/ODM after drawings or samples are complete.
Who is VKEFOT and how does it relate to Xingtai Hanchi?
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia. The manufacturer is Xingtai Hanchi Intelligent Technology Co., Ltd. Use this wording on quotes and certificates — do not invent alternate spellings of the brand.
What is HTGR 71x88x8mm NBR oil seal used for?
HTGR 71x88x8mm brown NBR oil seal is internal skeleton rotary shaft seal for automotive engine, transmission and rear axle, used to retain lubricant and prevent dust and water ingress.
What is HTGR type internal skeleton oil seal?
HTGR oil seal is double lip rotary shaft seal with internal metal skeleton and right-hand oil return thread, which pumps leaked oil back into housing and reduces seepage under rotation.
What material is this HTGR automotive shaft oil seal?
Made of NBR nitrile rubber with steel internal skeleton, brown finish, good compatibility with conventional mineral engine, transmission and gear oil.