Nov . 06, 2025 12:55 Back to list

Seal for TOYOTA 9031634001, Type D Oil | Leak-Proof OEM Fit

Field Notes on the Seal Type D Oil 90316-34001 for Toyota

I’ve spent a chunk of my career around drivetrains and rotating equipment, and—believe it or not—the smallest component often decides the biggest repair bill. The Seal we’re talking about here is the Type D Oil 90316-34001, a Genuine New Part for Toyota. It’s manufactured in JULU INDUSTRY AREA, XINGTAI CITY, HEBEI PROVINCE, CHINA 055250. Many customers say it’s the “fit-and-forget” piece they wish they’d used first.

Quick product brief

Manufacturer: TOYOTA (Genuine New Part)
Part number: 90316-34001 (SEAL, TYPE D OIL)
Country of origin: China
Condition: Genuine new, not remanufactured

Industry trends (why this matters now)

Two clear shifts: extended service intervals and tighter emission/efficiency targets. In practice, that puts more heat and longer duty cycles on rotary lip components. The result? Demand for higher-grade elastomers, better spring loads, and stricter runout/tolerance control. The Seal Type D—with a dual-lip architecture—suits that trend well.

Technical specifications (typical)

Lip design	Type D (dual-lip with garter spring)
Material	NBR or FKM depending on batch/application (≈70–80 Shore A)
Temp range	≈ -30°C to +120°C (NBR) / up to ≈ +200°C (FKM); real-world use may vary
Media compatibility	Engine oil, ATF, gear oil (per ISO 1817 guidance)
Dimensions	ID ≈ 34 mm (ref. PN), OD/width per OEM drawing; verify before ordering
Standards	Designed to ISO 6194 / DIN 3760 principles; elastomer per ASTM D2000

Process flow and quality

Materials are selected (NBR/FKM) against the oil chemistry. Compounds are mixed and molded, then vulcanized. The garter spring is installed, lips are precision trimmed, and surfaces receive anti-corrosion oil. Each batch typically undergoes leakage testing (ISO 6194), compression set checks (ASTM D395), and dimensional inspection. Service life in mixed fleet use is often 80–120k km, though driving style and shaft condition dictate the upper bound.

Applications and advantages

Use cases: Toyota engines, transmissions, and differentials requiring 90316-34001.
Industries: passenger vehicles, light commercial fleets, aftermarket service centers.
Advantages: strong lip stability at speed, good oil retention, and reduced weeping after heat soak.

Vendor comparison (observed in the field)

Vendor	Material grade	Tolerance control	Certifications	Warranty
Genuine Toyota 90316-34001 (this Seal)	NBR/FKM, OEM grade	Tight; OEM process capability	ISO 9001 / IATF 16949 (typical for OEM supply)	OEM channel warranty
Aftermarket (quality brand)	Automotive grade NBR	Good, varies by batch	ISO 9001; some IATF	Limited
Low-cost import	Basic NBR	Inconsistent	Varies	Minimal

Customization and support

For special duty—higher temps, bio-based oils, or unusual shaft finishes—specifying FKM, a dust lip, or micro-spring variant helps. Lead time and MOQ depend on tooling. To be honest, most shops don’t need custom: the OEM Seal fits right and lasts.

Case study (fleet anecdote)

A regional delivery fleet saw recurring weeps on a pair of vehicles using budget parts. Switching to this Genuine Seal during scheduled services cut subsequent oil-top-ups to zero over 12 months, with no visible leakage post 25,000 km checks. Not a lab result—just practical data from their maintenance logs.

Testing and compliance

Leakage/runout and endurance guided by ISO 6194 and DIN 3760.
Elastomer classification per ASTM D2000; compression set per ASTM D395.
Typical automotive QMS: ISO 9001 / IATF 16949 credentials at the plant level.

Citations

ISO 6194 (Rotary shaft lip-type seals) – Overview and test methods. https://www.iso.org/standard/
DIN 3760: Rotary shaft lip seals – DIN Standards summary. https://www.din.de
ASTM D2000 & D395 – Rubber materials classification and compression set. https://www.astm.org
IATF 16949: Automotive QMS requirements. https://www.iatfglobaloversight.org

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