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211C99 ✓ 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 COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL, hole_diameter: 0.219 INCHES NOMINAL IN, body_thickness: 0.060 INCHES NOMINAL IN, inside_diameter: 4.750 INCHES NOMINAL IN, flange_thickness: 0.060 INCHES NOMINAL IN, outside_diameter: 10.500 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 5340-00-829-5704, 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
211C99
NSN: 5340-00-829-5704
FSC: 5340
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL
hole_diameter0.219 INCHES NOMINAL IN
body_thickness0.060 INCHES NOMINAL IN
inside_diameter4.750 INCHES NOMINAL IN
flange_thickness0.060 INCHES NOMINAL IN
outside_diameter10.500 INCHES NOMINAL IN
body_outside_radius5.250 INCHES NOMINAL IN
inside_corner_radius0.625 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
first_recess_diameter10.380 INCHES NOMINAL IN
outside_corner_radius0.250 INCHES NOMINAL IN
peripheral_shape_styleROUND, MULTI HOLES
NSN5340-00-829-5704
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 211C99 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
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
SECURING DEVICE TYPE: THREADED FASTENER
•
INSIDE DIAMETER: 4.750 INCHES NOMINAL IN
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 2.500 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 1.190 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
BODY OUTSIDE RADIUS: 5.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR RECESS
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
SECURING DEVICE TYPETHREADED FASTENER
INSIDE DIAMETER4.750 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE2.500 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT1.190 INCHES NOMINAL IN
MATERIALSTEEL
BODY OUTSIDE RADIUS5.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLECIRCULAR RECESS
INSIDE CORNER RADIUS0.625 INCHES NOMINAL IN
HOLE DIAMETER0.219 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1334Upgraded Successor
successor cross-reference
successor
E430013Upgraded Successor
successor cross-reference
successor
1213-TBUpgraded Successor
successor cross-reference
successor
1213Upgraded Successor
successor cross-reference
successor
211-0099Interchangeable
Same NIIN cross-reference
interchangeable
A8796Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 211C99?
211C99 is a COVER,ACCESS.
What parts can replace 211C99?
There are 6 known substitutes for 211C99: 1334, E430013, 1213-TB and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 211C99?
211C99 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-829-5704. 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