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PartsTable / COMPONENT / 301599
301599 ✓ 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

LENS BLANK,OPHTHALMIC,MULTIFOCAL. Key specifications include end_item_identification: 6540-01-604-9603 OPHTHALMIC LENS FABRICATION SYSTEM, part_name_assigned_by_controlling_agency: LENS MULTIFOCAL 75MM FT28 6 BASE 2.50 ADD LEFT MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-905-1043, 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
301599
NSN: 5330-00-905-1043
FSC: 5330
CAGE: 63686 — THE WALWORTH COMPANY (USA)
SPECIFICATIONS
special_featuresMULTIFOCAL LENS 75MM FT28 6 BASE 2.50 ADD LEFT; FOR USE WITH END ITEM NSN 6540-01-604-9603 MULTIVISION FABRICATION SYSTEM MM
end_item_identification6540-01-604-9603 OPHTHALMIC LENS FABRICATION SYSTEM
part_name_assigned_by_controlling_agencyLENS MULTIFOCAL 75MM FT28 6 BASE 2.50 ADD LEFT MM
NSN5330-00-905-1043
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 301599 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
•
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 6
30-0414Interchangeable
interchangeable cross-reference
interchangeable
30-1599Interchangeable
interchangeable cross-reference
interchangeable
13972PC70Interchangeable
interchangeable cross-reference
interchangeable
6540NCM128831Interchangeable
interchangeable cross-reference
interchangeable
067571-6250002Interchangeable
interchangeable cross-reference
interchangeable
067513-6252Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 301599?
301599 is a LENS BLANK,OPHTHALMIC,MULTIFOCAL.
What parts can replace 301599?
There are 6 known substitutes for 301599: 30-0414, 30-1599, 13972PC70 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 301599?
301599 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-905-1043. 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