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Technical Data Sheet
500688 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.312 INCHES NOMINAL IN, housing_bore_diameter: 0.876 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-878-7355, 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
500688
NSN: 5330-00-878-7355
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.312 INCHES NOMINAL IN
housing_bore_diameter0.876 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter0.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed500 FEET PER MINUTE FT
NSN5330-00-878-7355
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 500688 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
SEALING ELEMENT STYLE: ANGULAR
HOUSING BORE DIAMETER: 0.876 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER: 0.500 INCHES NOMINAL IN
SEAL WIDTH: 0.312 INCHES NOMINAL IN
CASE STYLE: SQUARE
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 500 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER0.876 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER0.500 INCHES NOMINAL IN
SEAL WIDTH0.312 INCHES NOMINAL IN
CASE STYLESQUARE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
MATERIALSTEEL CASE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED500 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
F1757Interchangeable
interchangeable cross-reference
interchangeable
7706432Interchangeable
interchangeable cross-reference
interchangeable
4931Interchangeable
interchangeable cross-reference
interchangeable
583197Interchangeable
interchangeable cross-reference
interchangeable
535743Interchangeable
interchangeable cross-reference
interchangeable
549-31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 500688?
500688 is a SEAL,PLAIN ENCASED.
What parts can replace 500688?
There are 9 known substitutes for 500688: F1757, 7706432, 4931 and 6 more. Substitute compatibility should be verified for your specific system.
Is 500688 still available?
500688 is currently cancelled.
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