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Boss O-Ring Kit

There is 20 standard sizes for O-rings used to seal straight-thread tube fittings on a boss. A boss Tube fitting with boss seal is cylindrical projection on a casting or forging. The end of that projection is machined to provide a flat, smooth surface for sealing. Straight threads used with an O-ring provide a better seal than tapered threads used alone. Although made in a variety of o-ring compounds the most common Boss O-rings are Buna-N in 90 Durometer.




Image Model+ Item Name Qty. Price Quantity Discounts
OSK™ SAE Boss O-Ring Seal Kit - SAE 900 - 155 Piece Buna-N 90 K155X8N90-900

OSK™ SAE Boss O-Ring Seal Kit - SAE 900 - 155 Piece Buna-N 90

OSK™ SAE Boss O-Ring Seal Kit This Kit contains 155 pieces and 8 of the most popular 900 series O-Rings. These Boss Seal O-Rings are used in...
8
$14.00

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Quantity Discounts
1$14.00
2-9$11.20
10+$10.50
OSK™ SAE Boss O-Ring Kit 155 Piece Fluorocarbon FKM 90 Duro K155X8V90-900

OSK™ SAE Boss O-Ring Kit 155 Piece Fluorocarbon FKM 90 Duro

OSK™ SAE Boss O-Rings Seal Kit This Kit contains 155 pieces and 8 of the most popular 900 series O-Rings. These Boss Seal O-Rings are used in...
1
$40.00

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Quantity Discounts
1$40.00
2-9$32.00
10+$30.00
Industrial Boss Seal Kit - 212 Piece Fluorocarbon Viton®/FKM 90 Duro K212X20F90

Industrial Boss Seal Kit - 212 Piece Fluorocarbon Viton®/FKM 90 Duro

Industrial Boss Seal Kit - 212 Piece 90 Duro Viton®/FKM O-Rings Use of fluorocarbon rubber is preferred over nitrile when high operating...
2
$200.00

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Quantity Discounts
1$200.00
2-9$160.00
10+$150.00
Industrial Boss Seal Kit - 212 Piece Buna-N 90 K212X20N90

Industrial Boss Seal Kit - 212 Piece Buna-N 90

Industrial Boss Seal Kit - 212 Piece Buna-N 90 90 durometer nitrile is the most commonly used material in boss seal applications, due to its...
16
$43.00

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Quantity Discounts
1$43.00
2-9$34.40
10+$32.25
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece EPDM 70 K250X12E70-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece EPDM 70

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
0
$34.00

Add:

Quantity Discounts
1$34.00
2-9$27.20
10+$25.50
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Buna-N 70 K250X12N70-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Buna-N 70

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
5
$26.00

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Quantity Discounts
1$26.00
2-9$20.80
10+$19.50
OSK™ SAE 900 Boss O-Ring Seal Kit - 250 Piece Buna-N 90 K250X12N90-900

OSK™ SAE 900 Boss O-Ring Seal Kit - 250 Piece Buna-N 90

OSK™ Boss O-Rings Seal Kit in Buna-N 90 This Kit contains 250 pieces and 12 of the most popular 900 series O-Rings. These Boss Seal O-Rings are...
12
$23.00

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Quantity Discounts
1$23.00
2-9$18.40
10+$17.25
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Silicone S70 K250X12S70-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Silicone S70

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
0
$34.00

Add:

Quantity Discounts
1$34.00
2-9$27.20
10+$25.50
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Urethane 90 K250X12U90-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Urethane 90

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
1
$94.00

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Quantity Discounts
1$94.00
2-9$75.20
10+$70.50
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Fluorocarbon FKM 75 K250X12V75-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Fluorocarbon FKM 75

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
2
$67.00

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Quantity Discounts
1$67.00
2-9$53.60
10+$50.25
OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Fluorocarbon FKM 90 Duro K250X12V90-900

OSK™ SAE Boss O-Ring Seal Kit - 250 Piece Fluorocarbon FKM 90 Duro

OSK™ SAE Boss O-Ring Seal Kit The 900 series of dash numbers identifies the 20 sizes of boss seals. Except for size -901, the digits after the...
2
$74.00

Add:

Quantity Discounts
1$74.00
2-9$59.20
10+$55.50