OSK™ The Hoser's Combo Kit - Hydraulic BOSS, Flat Face & Flange Seal Kit


Qty Discounts Prices
1
$49.580		 2-9
$41.300		 10-24
$35.110		 25+
$29.580

$49.580

  • Model: KCOMBO-HOSER-N90
  • 5 in Stock
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Built for Professionals. Ready for the Field. Stay Ready, Stay Sealed.

This premium kit contains 24 unique O-Ring sizes in 90 Durometer Nitrile (Buna-N), ideal for high-pressure hydraulic BOSS fittings, flat face seals, and flange systems. Whether you're in the shop or out in the field, you'll have the exact seals needed to reduce downtime and keep your equipment running.

The Hoser's Combo Kit - Hydraulic BOSS, Flat Face & Flange Seal Kit Complete O-Ring Kit Contents

BOSS O-Rings

  • 50 pieces – B90904 – 1/4" BOSS
  • 50 pieces – B90905 – 5/16" BOSS
  • 50 pieces – B90906 – 3/8" BOSS
  • 25 pieces – B90908 – 1/2" BOSS
  • 25 pieces – B90910 – 5/8" BOSS
  • 25 pieces – B90912 – 3/4" BOSS
  • 10 pieces – B90916 – 1" BOSS
  • 5 pieces – B90920 – 1-1/4" BOSS
  • 5 pieces – B90924 – 1-1/2" BOSS
  • 50 pieces – B90932 – 2" BOSS

Flat Face Seal O-Rings

  • 50 pieces – B90011 – 1/4" Flat Face
  • 50 pieces – B90012 – 3/8" Flat Face
  • 25 pieces – B90014 – 1/2" Flat Face
  • 25 pieces – B90016 – 5/8" Flat Face
  • 15 pieces – B90018 – 3/4" Flat Face
  • 15 pieces – B90021 – 1" Flat Face
  • 15 pieces – B90025 – 1-1/4" Flat Face
  • 10 pieces – B90029 – 1-1/2" Flat Face

Flange Seal O-Rings

  • 10 pieces – B90210 – 1/2" Flange
  • 10 pieces – B90214 – 3/4" Flange
  • 10 pieces – B90219 – 1" Flange
  • 5 pieces – B90222 – 1-1/4" Flange
  • 5 pieces – B90225 – 1-1/2" Flange
  • 5 pieces – B90228 – 2" Flange

The Hoser's Combo Kit - Hydraulic BOSS, Flat Face & Flange Seal Kit

Kit Features:

  • Over 565 O-Rings total – conveniently organized and clearly labeled 
  • Covers BOSS (SAE J514), Flat Face, and SAE Code 61/62 Flange sizes
  • Includes hard-to-find large sizes (up to 2" BOSS & Flange)
  • High-performance B90 compound for excellent fuel, oil, and hydraulic resistance
  • Compact, refillable case perfect for mobile techs and maintenance teams

Perfect For:

  • Hydraulic equipment repair
  • Preventative maintenance programs
  • Field service technicians
  • MRO inventory kits
  • OEM support and field service crews