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Technical Data Sheet
PartsTable / COMPONENT / 8577ITEM5M
8577ITEM5M ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 45.0 DEGREES NOMINAL, material: COPPER ALLOY OVERALL, attachment_method: ROUND HOLE, rim_surface_width: 0.188 INCHES NOMINAL IN, peripheral_diameter: 2.875 INCHES NOMINAL IN, center_hole_diameter: 0.781 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-314-3923, 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
8577ITEM5M
NSN: 5330-00-314-3923
FSC: 5330
CAGE: 71956 — RELIANCE ELECTRIC COMPANY DBA RELIANCE & DODGE BRANDS (USA)
SPECIFICATIONS
angle45.0 DEGREES NOMINAL
materialCOPPER ALLOY OVERALL
attachment_methodROUND HOLE
rim_surface_width0.188 INCHES NOMINAL IN
peripheral_diameter2.875 INCHES NOMINAL IN
center_hole_diameter0.781 INCHES NOMINAL IN
cross-sectional_height1.250 INCHES NOMINAL IN
attachment_hole_diameter0.250 INCHES NOMINAL IN
cross-sectional_thickness0.250 INCHES NOMINAL IN
attachment_feature_quantity4
flanged_body_outside_diameter1.625 INCHES NOMINAL IN
NSN5330-00-314-3923
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8577ITEM5M 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 HEIGHT: 1.250 INCHES NOMINAL IN
•
ATTACHMENT METHOD: ROUND HOLE
•
MATERIAL: COPPER ALLOY OVERALL
•
CENTER HOLE DIAMETER: 0.781 INCHES NOMINAL IN
•
RIM SURFACE WIDTH: 0.188 INCHES NOMINAL IN
•
ANGLE: 45.0 DEGREES NOMINAL
•
CROSS-SECTIONAL THICKNESS: 0.250 INCHES NOMINAL IN
•
ATTACHMENT HOLE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT1.250 INCHES NOMINAL IN
ATTACHMENT METHODROUND HOLE
MATERIALCOPPER ALLOY OVERALL
CENTER HOLE DIAMETER0.781 INCHES NOMINAL IN
RIM SURFACE WIDTH0.188 INCHES NOMINAL IN
ANGLE45.0 DEGREES NOMINAL
CROSS-SECTIONAL THICKNESS0.250 INCHES NOMINAL IN
ATTACHMENT HOLE DIAMETER0.250 INCHES NOMINAL IN
FLANGED BODY OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
ATTACHMENT FEATURE QUANTITY4
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
NF-M-5#0Interchangeable
interchangeable cross-reference
interchangeable
31.570Interchangeable
interchangeable cross-reference
interchangeable
37724Interchangeable
interchangeable cross-reference
interchangeable
31570Interchangeable
interchangeable cross-reference
interchangeable
M1016-8Interchangeable
interchangeable cross-reference
interchangeable
7-199-002668Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8577ITEM5M?
8577ITEM5M is a RETAINER,PACKING.
What parts can replace 8577ITEM5M?
There are 9 known substitutes for 8577ITEM5M: NF-M-5#0, 31.570, 37724 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8577ITEM5M?
8577ITEM5M is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-314-3923. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026