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CAFB4305B — SEAL RING,METAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

CAFB4305B: SEAL RING,METAL.

The SEAL RING,METAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, ring_style: CONTRACTING CONCENTRIC, joint_style: STEP JOINT, overall_width: 0.2460 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN, inside_diameter: 5.297 INCHES NOMINAL IN, special_features: DRILL 24 HOLES,3/64 IN. DIA THROUGH THE WIDTH OF THE RINGEQUALLY SPACED ON 5-19/64 IN.

BOLT CIRCLE IN. This part is cataloged in the U.S. Government catalog under NSN 5330-00-271-9016, 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
CAFB4305B
NSN: 5330-00-271-9016
FSC: 5330 — Packing and Gasket Materials
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
ring_styleCONTRACTING CONCENTRIC
joint_styleSTEP JOINT
overall_width0.2460 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN
inside_diameter5.297 INCHES NOMINAL IN
special_featuresDRILL 24 HOLES,3/64 IN. DIA THROUGH THE WIDTH OF THE RINGEQUALLY SPACED ON 5-19/64 IN. BOLT CIRCLE IN
radial_wall_thickness0.1950 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
cross-sectional_shape_styleSTRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
material_document_and_classificationMIL-B-16261,GRADE 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-271-9016
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CAFB4305B 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-16261,GRADE 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: STRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
•
JOINT STYLE: STEP JOINT
•
INSIDE DIAMETER: 5.297 INCHES NOMINAL IN
•
RADIAL WALL THICKNESS: 0.1950 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
•
RING STYLE: CONTRACTING CONCENTRIC
TECHNICAL CHARACTERISTICS
OVERALL WIDTH0.2460 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-16261,GRADE 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESTRAIGHT FACE SCRAPER, VENTILATED OIL CONTROL
JOINT STYLESTEP JOINT
INSIDE DIAMETER5.297 INCHES NOMINAL IN
RADIAL WALL THICKNESS0.1950 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
RING STYLECONTRACTING CONCENTRIC
SPECIAL FEATURESDRILL 24 HOLES,3/64 IN. DIA THROUGH THE WIDTH OF THE RINGEQUALLY SPACED ON 5-19/64 IN. BOLT CIRCLE IN
MATERIALCOPPER ALLOY OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 2
AFB4305BReference document
Same NSN cross-reference
Reference document — Secondary reference
3001969Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CAFB4305B?
CAFB4305B is a SEAL RING,METAL.
What parts can replace CAFB4305B?
There are 2 known substitutes for CAFB4305B: AFB4305B, 3001969. Substitute compatibility should be verified for your specific system.
What is the NSN for CAFB4305B?
CAFB4305B is cataloged in the U.S. Government catalog under NSN 5330-00-271-9016. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.