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Technical Data Sheet
B-3-28 ✓ Verified by PartsTable
Bosch · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Mounts on a single-gang box and allows rotation of a detector. Wires are hidden inside. Key specifications include color: GOLD CHEVRON, bore_diameter: 1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN, overall_width: 0.4900 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, alignment_type: RIGID, fiber_material: RAYON CHEVRON, overall_length: 6.000 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 5330-00-409-4060, 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
B-3-28
NSN: 5330-00-409-4060
FSC: 5330
CAGE: 06178 — ALTEC AIR, LLC DBA ALTEC LLC (USA)
SPECIFICATIONS
colorGOLD CHEVRON
bore_diameter1.9994 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN
overall_width0.4900 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
alignment_typeRIGID
fiber_materialRAYON CHEVRON
overall_length6.000 INCHES NOMINAL IN
user_designatorMAN
special_featuresEMBROIDERED CHEVRON AND DEVICE
style_designatorNON-SEPARABLE, OPEN END, DRAWN SHELL
attachment_methodSEW-ON
cloth-fabric_nameBROADCLOTH BACKGROUND
department_designationUS MARINE CORPS
NSN5330-00-409-4060
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B-3-28 MFR: Bosch ⚠ 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
SUPPLEMENTARY FEATURES: CROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
SUPPLEMENTARY FEATURESCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MIL-DTL-14651AInterchangeable
interchangeable cross-reference
interchangeable
B-3-28Interchangeable
interchangeable cross-reference
interchangeable
MIL-I-14651Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-14651Interchangeable
interchangeable cross-reference
interchangeable
071006Interchangeable
interchangeable cross-reference
interchangeable
X11667Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-3-28?
B-3-28 is a VOLTAGE REGULATOR SUBASSEMBLY manufactured by Bosch.
What parts can replace B-3-28?
There are 7 known substitutes for B-3-28: MIL-DTL-14651A, B-3-28, MIL-I-14651 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-3-28?
B-3-28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-409-4060. This indicates validated use in U.S. government and defense supply chains.
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