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Technical Data Sheet
PartsTable / COMPONENT / TM527
TM527 ✓ 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: 0.625 INCHES NOMINAL IN, outside_diameter: 6.506 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 6.499 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-640-9140, 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
TM527
NSN: 5330-00-640-9140
FSC: 5330
CAGE: 99832 — SCOTT HUBER ESSICK A CO OF FIGGIE INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
outside_diameter6.506 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter6.499 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter5.250 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-640-9140
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: TM527 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
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
•
SURFACE TREATMENT: PLASTIC CASE
•
HOUSING BORE DIAMETER: 6.499 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 6.506 INCHES NOMINAL IN
•
MATERIAL: LEATHER SEALING ELEMENT
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.625 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC CASE
HOUSING BORE DIAMETER6.499 INCHES NOMINAL IN
OUTSIDE DIAMETER6.506 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
MATERIALSTEEL CASE
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER5.250 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
40081420Interchangeable
interchangeable cross-reference
interchangeable
TH163Interchangeable
interchangeable cross-reference
interchangeable
F2242-000793Interchangeable
interchangeable cross-reference
interchangeable
52488Interchangeable
interchangeable cross-reference
interchangeable
55104Interchangeable
interchangeable cross-reference
interchangeable
98801Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TM527?
TM527 is a SEAL,PLAIN ENCASED.
What parts can replace TM527?
There are 25 known substitutes for TM527: 40081420, TH163, F2242-000793 and 22 more. Substitute compatibility should be verified for your specific system.
Is TM527 still available?
TM527 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026