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Technical Data Sheet
PartsTable / COMPONENT / 309-1PC77
309-1PC77 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include angle: 75.0 DEGREES NOMINAL, material: RUBBER SYNTHETIC OVERALL, peripheral_diameter: 2.875 INCHES NOMINAL IN, center_hole_diameter: 1.875 INCHES NOMINAL IN, cross-sectional_height: 0.500 INCHES NOMINAL IN, cross-sectional_shape_style: CUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-290-9472, 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
309-1PC77
NSN: 5330-00-290-9472
FSC: 5330
CAGE: 92435 — ALCO STANDARD CORP ALCO FOOD SERVICE EQUIPMENT CO ALCO DISPENSING SYSTEMS DIV (USA)
SPECIFICATIONS
angle75.0 DEGREES NOMINAL
materialRUBBER SYNTHETIC OVERALL
peripheral_diameter2.875 INCHES NOMINAL IN
center_hole_diameter1.875 INCHES NOMINAL IN
cross-sectional_height0.500 INCHES NOMINAL IN
cross-sectional_shape_styleCUP
NSN5330-00-290-9472
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 309-1PC77 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
•
ANGLE: 75.0 DEGREES NOMINAL
•
PERIPHERAL DIAMETER: 2.875 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: CUP
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ANGLE75.0 DEGREES NOMINAL
PERIPHERAL DIAMETER2.875 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLECUP
MATERIALRUBBER SYNTHETIC OVERALL
CROSS-SECTIONAL HEIGHT0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1561-1375Interchangeable
interchangeable cross-reference
interchangeable
1321-0811Interchangeable
interchangeable cross-reference
interchangeable
11810Interchangeable
interchangeable cross-reference
interchangeable
6LV4531-009Interchangeable
interchangeable cross-reference
interchangeable
U79UInterchangeable
interchangeable cross-reference
interchangeable
6L.4531.009.00-484390Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 309-1PC77?
309-1PC77 is a PACKING,PREFORMED.
What parts can replace 309-1PC77?
There are 12 known substitutes for 309-1PC77: 1561-1375, 1321-0811, 11810 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 309-1PC77?
309-1PC77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-290-9472. 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