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Technical Data Sheet
33688HA ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The FELT,MECHANICAL,PREFORMED is a the manufacturer industrial component. Key specifications include material: WOOL OVERALL, cross-sectional_width: 0.344 INCHES NOMINAL IN, cross-sectional_height: 5.000 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-712-6491, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
33688HA
NSN: 5330-00-712-6491
FSC: 5330
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialWOOL OVERALL
cross-sectional_width0.344 INCHES NOMINAL IN
cross-sectional_height5.000 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE
NSN5330-00-712-6491
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 33688HA MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CROSS-SECTIONAL WIDTH: 0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: SQUARE
CROSS-SECTIONAL HEIGHT: 5.000 INCHES NOMINAL IN
MATERIAL: WOOL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL WIDTH0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE
CROSS-SECTIONAL HEIGHT5.000 INCHES NOMINAL IN
MATERIALWOOL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
47281Interchangeable
interchangeable cross-reference
interchangeable
A-A-394 SZ1Interchangeable
interchangeable cross-reference
interchangeable
RR-W-456Interchangeable
interchangeable cross-reference
interchangeable
CU25ART13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 33688HA?
33688HA is a FELT,MECHANICAL,PREFORMED.
What parts can replace 33688HA?
There are 4 known substitutes for 33688HA: 47281, A-A-394 SZ1, RR-W-456 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 33688HA?
33688HA is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-712-6491. This indicates validated use in U.S. government and defense supply chains.
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