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-100 Series 3/32" CS




Image Model+ Item Name Stock Price Quantity Discounts
ST106 Single Turn Split Teflon Backup Ring ST106

ST106 Single Turn Split Teflon Backup Ring

AS568-106 (0.086" W X 0.202"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
537
$2.15

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Quantity Discounts
1-15$2.15
16-92$1.61
93+$1.08
ST109 Single Turn Split Teflon Backup Ring ST109

ST109 Single Turn Split Teflon Backup Ring

AS568-109 (0.086" W X 0.327"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
5
$2.15

Add:

Quantity Discounts
1-15$2.15
16-92$1.61
93+$1.08
ST110 Single Turn Split Teflon Backup Ring ST110

ST110 Single Turn Split Teflon Backup Ring

AS568-110 (0.086" W X 0.39"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
608
$0.34

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Quantity Discounts
1-96$0.34
97-588$0.26
589+$0.17
ST111 Single Turn Split Teflon Backup Ring ST111

ST111 Single Turn Split Teflon Backup Ring

AS568-111 (0.086" W X 0.452"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
1009
$0.34

Add:

Quantity Discounts
1-96$0.34
97-588$0.26
589+$0.17
ST112 Single Turn Split Teflon Backup Ring ST112

ST112 Single Turn Split Teflon Backup Ring

AS568-112 (0.086" W X 0.515"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
1008
$0.36

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Quantity Discounts
1-92$0.36
93-555$0.27
556+$0.18
ST113 Single Turn Split Teflon Backup Ring ST113

ST113 Single Turn Split Teflon Backup Ring

AS568-113 (0.086" W X 0.577"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
65
$0.38

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Quantity Discounts
1-86$0.38
87-526$0.29
527+$0.19
ST114 Single Turn Split Teflon Backup Ring ST114

ST114 Single Turn Split Teflon Backup Ring

AS568-114 (0.086" W X 0.64"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
905
$0.39

Add:

Quantity Discounts
1-86$0.39
87-499$0.29
500+$0.20
ST115 Single Turn Split Teflon Backup Ring ST115

ST115 Single Turn Split Teflon Backup Ring

AS568-115 (0.086" W X 0.702"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
39
$0.42

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Quantity Discounts
1-78$0.42
79-476$0.32
477+$0.21
ST116 Single Turn Split Teflon Backup Ring ST116

ST116 Single Turn Split Teflon Backup Ring

AS568-116 (0.086" W X 0.765"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
494
$0.42

Add:

Quantity Discounts
1-78$0.42
79-476$0.32
477+$0.21
ST117 Single Turn Split Teflon Backup Ring ST117

ST117 Single Turn Split Teflon Backup Ring

AS568-117 (0.086" W X 0.831"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
110
$0.43

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Quantity Discounts
1-75$0.43
76-454$0.32
455+$0.22
ST118 Single Turn Split Teflon Backup Ring ST118

ST118 Single Turn Split Teflon Backup Ring

AS568-118 (0.086" W X 0.893"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
141
$0.48

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Quantity Discounts
1-69$0.48
70-416$0.36
417+$0.24
ST119 Single Turn Split Teflon Backup Ring ST119

ST119 Single Turn Split Teflon Backup Ring

AS568-119 (0.086" W X 0.956"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
470
$0.48

Add:

Quantity Discounts
1-69$0.48
70-416$0.36
417+$0.24
ST120 Single Turn Split Teflon Backup Ring ST120

ST120 Single Turn Split Teflon Backup Ring

AS568-120 (0.086" W X 1.018"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
227
$0.54

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Quantity Discounts
1-60$0.54
61-370$0.41
371+$0.27
ST121 Single Turn Split Teflon Backup Ring ST121

ST121 Single Turn Split Teflon Backup Ring

AS568-121 (0.086" W X 1.081"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
150
$0.54

Add:

Quantity Discounts
1-60$0.54
61-370$0.41
371+$0.27
ST122 Single Turn Split Teflon Backup Ring ST122

ST122 Single Turn Split Teflon Backup Ring

AS568-122 (0.086" W X 1.143"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
176
$0.54

Add:

Quantity Discounts
1-60$0.54
61-370$0.41
371+$0.27
ST123 Single Turn Split Teflon Backup Ring ST123

ST123 Single Turn Split Teflon Backup Ring

AS568-123 (0.086" W X 1.206"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
41
$0.61

Add:

Quantity Discounts
1-54$0.61
55-322$0.46
323+$0.31
ST124 Single Turn Split Teflon Backup Ring ST124

ST124 Single Turn Split Teflon Backup Ring

AS568-124 (0.086" W X 1.268"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
25
$0.61

Add:

Quantity Discounts
1-54$0.61
55-322$0.46
323+$0.31
ST125 Single Turn Split Teflon Backup Ring ST125

ST125 Single Turn Split Teflon Backup Ring

AS568-125 (0.086" W X 1.331"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
17
$0.64

Add:

Quantity Discounts
1-52$0.64
53-312$0.48
313+$0.32
ST126 Single Turn Split Teflon Backup Ring ST126

ST126 Single Turn Split Teflon Backup Ring

AS568-126 (0.086" W X 1.393"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
0
$0.74

Add:

Quantity Discounts
1-44$0.74
45-270$0.56
271+$0.37
ST127 Single Turn Split Teflon Backup Ring ST127

ST127 Single Turn Split Teflon Backup Ring

AS568-127 (0.086" W X 1.456"ID X 0.053"HT) Teflon PTFE Back-up Rings are designed to prevent extrusion in rubber O-ring sealing...
0
$0.78

Add:

Quantity Discounts
1-42$0.78
43-256$0.59
257+$0.39


What are the most common O-ring compounds?

We stock O-Rings in over 20 different compounds and durometers the following six are the standard rubber materials in a range of durometers (Shore A) hardness to satisfy practically any service condition:

Buna-N O-Rings / Nitrile O-Rings / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
AS-568 Buna-N O-Rings | Metric Buna-N O-Rings

Viton® O-Rings / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance.
AS-568 Viton® O-Rings | Metric Viton® O-Rings

Ethylene-Propylene / EPDM O-Rings: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
AS-568 EPDM O-Rings | Metric EPDM O-Rings

Silicone O-Rings / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
AS-568 Silicone O-Rings | Metric Silicone O-Rings

Neoprene® O-Rings / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®.
AS-568 Neoprene® O-Rings