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9979 — CRYSTAL UNIT,QUARTZ

✓ Government record, cited
Multibrackets · ORING SEAL
PRODUCT OVERVIEW

9979: CRYSTAL UNIT,QUARTZ.

The M VESA Extension Kit 200mm is designed to enhance compatibility for the M VESA Full Motion mount by extending VESA support from 600 mm to 800 mm. This makes it ideal for accommodating larger screens or displays with non-standard VESA patterns, including OLED screens with lower VESA placements. The result is seamless alignment and a more flexible installation in professional environments.

The extension kit integrates effortlessly with selected mounts in the Multibrackets Flexarm Series, delivering precision, adaptability, and long-term value for various mounting scenarios. Compatible Multibrackets products: - 7350073736744 – M Pull Down Full Motion Flexarm - 7350105214301 – M Pull Down Full Motion Flexarm X-Large - 7350073736737 – M Recessed Full Motion Flexarm - 7350105210198 – M Hospitality Flexarm with STB Enclosure Black - 7350105210204 – M Hospitality Flexarm with STB Enclosure White - 7350073736539 – M Universal Long Reach Arm 1010mm HD, Single< This part is cataloged in the U.S. Government catalog under NSN 5330-00-088-6543, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
9979
NSN: 5330-00-088-6543
NIINs: 000886543, 004997325, 008438581, 010585990, 011470994, 014679172
FSC: 5330 — Packing and Gasket Materials
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
body_width0.402 INCHES MAXIMUM IN
case_styleSQUARE
seal_width0.562 INCHES NOMINAL IN
overall_width0.435 INCHES MAXIMUM IN
body_thickness0.150 INCHES MAXIMUM IN
overall_length0.530 INCHES MAXIMUM IN
terminal_length1.500 INCHES MINIMUM IN
style_designatorRECTANGULAR BODY, GULL WING
circuit_resonanceSERIES RESONANCE
overall_thickness0.183 INCHES MAXIMUM IN
terminal_diameter0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
NSN5330-00-088-6543
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9979 MFR: Multibrackets ⚠ 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
•
SEAL WIDTH: 0.562 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL-ANGULAR
•
HOUSING BORE DIAMETER: 1.752 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.562 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL-ANGULAR
HOUSING BORE DIAMETER1.752 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER1.000 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT A
MATERIALRUBBER SYNTHETIC SEALING ELEMENT B
SUBSTITUTES & CROSS-REFERENCES 2
5672997Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
00044Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9979?
9979 is a CRYSTAL UNIT,QUARTZ manufactured by Multibrackets.
What parts can replace 9979?
There are 2 known substitutes for 9979: 5672997, 00044. Substitute compatibility should be verified for your specific system.
What is the NSN for 9979?
9979 is cataloged in the U.S. Government catalog under NSN 5330-00-088-6543. This indicates validated use in U.S. government and defense supply chains.
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