General Faucet Repair - 2-29

SPECIAL O-RINGS

Section 2 - General Faucet Repairs

O-Rings Packaged 25 per bag
From 1/16" to 5/64" thick. Made from Buna-N Rubber.
ILLUSTRATIONS ACTUAL SIZE
NBR is a very commonly used material for o-rings because of its good mechanical
properties, its resistance to lubricants and greases. The physical and chemical
resistance properties of NBR materials are determined by the acrylonitrile (ACN)
content of the base polymer which can vary between 18% and 50%. Low ACN
content ensures good flexibility at low temperatures, but offers limited resistance
to oils and fuels. As the ACN content increases, the low temperature flexibility
reduces and the resistance to oils and fuels improves.
Physical and chemical resistance properties of NBR materials are also affected by
the cure system of the polymer. Peroxide-cured materials have improved physical
properties, chemical resistance and thermal properties as compared to sulfurdonor-cured materials.
Standard grades of NBR are typically resistant to mineral oil-based lubricants and
greases, many grades of hydraulic fluids, aliphatic hydrocarbons, silicone oils and
greases and water to about 80ºC.
NBR is generally not resistant to aromatic and chlorinated hydrocarbons, fuels
with a high aromatic content, polar solvents, glycol-based brake fluids and
non-flammible hydraulic fluids (HFD). NBR also has low resistance to ozone,
weathering and aging, but in many applications this has no negative effect. All
Buna N and Silicone O-rings shown are 70 Durometer unless noted.
Cat.#

Description

Thick

11762

Elkay O-Ring

1-53/64"

1-61/64"

1/32"

40004

#142 O-Ring

#148

#142

Mark's O-Ring Pick
Made of a heat treated spring wire and will make the removal of O-rings quick and easy.
Cat.#

Description

04760

O-Ring Pick

Silicone O-Rings Packaged 25 per bag
1/8" thick. Assorted Size Silicone
ILLUSTRATIONS ACTUAL SIZE
Silicone rubbers are noted for their ability to be used over a wide temperature range and for excellent resistance to ozone, weathering and aging. Generally, silicone
materials are physiologically harmless so they are commonly used by the food and drug industries.
Standard silicones are resistant to water (100ºC), aliphatic engine and transmission oils and animal and plant oils and fats.
Silicones are generally not resistant to fuels, aromatic mineral oils, steam (short term to 120ºC possible), silicone oils and greases, acids or alkalis. All Silicone O-rings
shown are 70 Durometers unless noted.

Cat.#

Description

Thick

31833

#010 O-Ring

1/4"

3/8"

1/16"

31834

#011 O-Ring

5/16"

7/16"

1/16"

31835

#012 O-Ring

3/8"

1/2"

1/16"

31836

#014 O-Ring

1/2"

5/8"

1/16"

31837

#015 O-Ring

9/16"

11/16"

1/16"

31838

#016 O-Ring

5/8"

3/4"

1/16"

31839

#018 O-Ring

3/4"

7/8"

1/16"

31840

#021 O-Ring

15/16"

1-1/16"

1/16"

31841

#110 O-Ring

3/8"

9/16"

3/32"

31842

#111 O-Ring

7/16"

5/8"

3/32"

31843

#113 O-Ring

9/16"

3/4"

3/32"

31844

#114 O-Ring

5/8"

13/16"

3/32"

31845

#129 O-Ring

1-9/16"

1-3/4"

3/32"

MARK'S PLUMBING PARTS

#010

#011

#012

#014

#015

#110

#111

#114

#129

WWW.MARKSPP.COM

#021

#016

#113

#018

2-29

http://WWW.MARKSPP.COM

General Faucet Repair

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