PartsTable
Technical Data Sheet
Z261-18 ✓ 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 BUMPER is a the manufacturer industrial component. Key specifications include color: BLACK, material: RUBBER SYNTHETIC, thread_size: 5/16-18, shank_length: 0.645 INCHES NOMINAL IN, overall_height: 1.280 INCHES NOMINAL IN, style_designator: FLAT RECESSED TOP THREADED STUD. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-012-2249, 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
Z261-18
NSN: 5340-00-012-2249
FSC: 5340
CAGE: 11568 — GARDNER DENVER INC. (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER SYNTHETIC
thread_size5/16-18
shank_length0.645 INCHES NOMINAL IN
overall_height1.280 INCHES NOMINAL IN
style_designatorFLAT RECESSED TOP THREADED STUD
fastening_device_sizeNO. 5/16-18 BINDER HEAD SCREW
fastening_device_typeMACHINE SCREW
outside/top_flange_diameter1.000 INCHES NOMINAL IN
NSN5340-00-012-2249
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: Z261-18 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
STYLE DESIGNATOR: FLAT RECESSED TOP THREADED STUD
SHANK LENGTH: 0.645 INCHES NOMINAL IN
FASTENING DEVICE TYPE: MACHINE SCREW
THREAD SIZE: 5/16-18
COLOR: BLACK
OUTSIDE/TOP FLANGE DIAMETER: 1.000 INCHES NOMINAL IN
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT RECESSED TOP THREADED STUD
SHANK LENGTH0.645 INCHES NOMINAL IN
FASTENING DEVICE TYPEMACHINE SCREW
THREAD SIZE5/16-18
COLORBLACK
OUTSIDE/TOP FLANGE DIAMETER1.000 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
OVERALL HEIGHT1.280 INCHES NOMINAL IN
FASTENING DEVICE SIZENO. 5/16-18 BINDER HEAD SCREW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
X30208Interchangeable
interchangeable cross-reference
interchangeable
1589Interchangeable
interchangeable cross-reference
interchangeable
01589Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Z261-18?
Z261-18 is a BUMPER.
What parts can replace Z261-18?
There are 3 known substitutes for Z261-18: X30208, 1589, 01589. Substitute compatibility should be verified for your specific system.
Is Z261-18 still available?
Z261-18 is currently cancelled.
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