EPDM O-Rings

EPDM O-Rings

EPDM O-Rings are elastomer sealing components designed for compatible water-based media and weather-exposed equipment. Made from EPDM rubber, they provide elastic sealing performance with resistance to water, ozone and outdoor aging. Available in AS568 reference sizes and custom specifications, they can be selected according to groove dimensions, hardness, compound requirements and operating conditions. Common applications include water systems, pumps, valves, filtration equipment, heating and cooling circuits, and outdoor sealing assemblies.

Produkt Detail

Product Overview

Elastomer seals for water systems and weather exposed equipment

Yozonetech EPDM O-rings offer elastic sealing for compatible water-based media and equipment exposed to weathering. Match the compound, hardness and dimensions to your groove and operating conditions, with standard reference sizes and custom requirements reviewed at quotation.

Request a quote: ptfetube@yozonetech.cn

Product Benefits

  • Elastic recovery supports sealing in correctly designed static joints.
  • Good resistance to water, ozone and outdoor aging.
  • Compound options can be selected for hot-water and steam duty.
  • Suitable formulations can serve compatible glycol-based and phosphate-ester fluids.

Technical Selection Data

Parameter Reference and selection requirement
Material Ethylene propylene diene rubber EPDM
Common hardness reference 70 ± 5 Shore A is a common commercial grade; confirm the supplied compound and hardness
Temperature reference Approximately -45°C to +150°C for selected grades; actual limits depend on compound, cure system and medium
Typical appearance Black is common; specify any other color for review
Primary service Static sealing; dynamic use requires review of motion, friction, wear and lubrication
Compatible media candidates Water, suitable aqueous solutions and selected glycol or phosphate-ester fluids
Unsuitable media Mineral oils, petroleum greases and fuels
Pressure and steam limits Specify for the compound and assembly; no universal pressure or steam-temperature rating
Dimensions and tolerances Selected AS568 references; confirm standard revision and acceptance tolerances

These are general selection references, not a test certificate for the supplied compound. Confirm temperature, hardness, compression set and chemical compatibility for your order. Food-contact or drinking-water compliance requires documentation for the specific formulation and finished product.

Common AS568 Size Reference

90 selected sizes for quotation and design review. ID = inside diameter; CS = circular cross-section diameter. All dimensions below are in mm. Outside diameter is calculated as OD = ID + 2 × CS.

AS568 ID mm CS mm AS568 ID mm CS mm AS568 ID mm CS mm
006 2.90 1.78 102 1.24 2.62 201 4.34 3.53
007 3.68 1.78 103 2.06 2.62 202 5.94 3.53
008 4.47 1.78 104 2.84 2.62 203 7.52 3.53
009 5.28 1.78 105 3.63 2.62 204 9.12 3.53
010 6.07 1.78 106 4.42 2.62 205 10.69 3.53
011 7.65 1.78 107 5.23 2.62 206 12.29 3.53
012 9.25 1.78 108 6.02 2.62 207 13.87 3.53
013 10.82 1.78 109 7.59 2.62 208 15.47 3.53
014 12.42 1.78 110 9.19 2.62 209 17.04 3.53
015 14.00 1.78 111 10.77 2.62 210 18.64 3.53
016 15.60 1.78 112 12.37 2.62 211 20.22 3.53
017 17.17 1.78 113 13.94 2.62 212 21.82 3.53
018 18.77 1.78 114 15.54 2.62 213 23.39 3.53
019 20.35 1.78 115 17.12 2.62 214 24.99 3.53
020 21.95 1.78 116 18.72 2.62 215 26.57 3.53
021 23.52 1.78 117 20.29 2.62 216 28.17 3.53
022 25.12 1.78 118 21.89 2.62 217 29.74 3.53
023 26.70 1.78 119 23.47 2.62 218 31.34 3.53
024 28.30 1.78 120 25.07 2.62 219 32.92 3.53
025 29.87 1.78 121 26.64 2.62 220 34.52 3.53
026 31.47 1.78 122 28.24 2.62 221 36.09 3.53
027 33.05 1.78 123 29.82 2.62 222 37.69 3.53
028 34.65 1.78 124 31.42 2.62 223 40.87 3.53
029 37.82 1.78 125 32.99 2.62 224 44.04 3.53
030 41.00 1.78 126 34.59 2.62 225 47.22 3.53
031 44.17 1.78 127 36.17 2.62 226 50.39 3.53
032 47.35 1.78 128 37.77 2.62 227 53.57 3.53
033 50.52 1.78 129 39.34 2.62 228 56.74 3.53
034 53.70 1.78 130 40.94 2.62 229 59.92 3.53
035 56.87 1.78 131 42.52 2.62 230 63.09 3.53

Read each three-column group independently. Example: AS568-214 has ID 24.99 mm and CS 3.53 mm, giving a calculated OD of 32.05 mm. These are AS568 reference dimensions expressed in millimetres, not a separate metric size standard.

Specify the AS568 dash number together with the EPDM compound, hardness and applicable dimensional tolerances. The chart is a selected size reference, not the complete AS568 standard or a live stock list.

For other AS568 sizes, larger cross sections or custom metric dimensions, send ID × CS, tolerances and quantity for feasibility and availability confirmation.

Anwendungen

EPDM O-rings can be considered for water pumps and valves, filtration housings, heating and cooling circuits, and weather-exposed enclosures. Specify the complete fluid formulation, including cleaning agents and additives, rather than selecting from the base fluid alone.

Compound and Groove Selection

Choose the compound and cure system for the operating temperature and cleaning or steam cycle. Check groove fill, compression, installation stretch, clearances and thermal expansion against the selected seal design. A harder ring is not automatically a better seal.

Keep the ring and groove clean, avoid twisting or nicking the rubber, and use an assembly lubricant compatible with both EPDM and the process medium. Petroleum-based lubricants are unsuitable. For moving joints, specify speed, stroke, frequency and lubrication for design review.

Custom Requirements and Inspection

Provide the AS568 number or metric ID × CS, hardness, compound requirements and quantity. For a drawing-based size, include tolerances and the mating groove. Agree dimensional checks, visual acceptance, hardness testing and any compound or batch documentation required.

Häufig gestellte Fragen

Can EPDM be used with oil or fuel

EPDM is generally unsuitable for mineral oils, petroleum greases and fuels. Identify the full medium so a compatible material can be selected.

Is every EPDM O ring suitable for hot water and steam

No. Temperature capability and compression set depend on formulation and cure system. Provide steam conditions, exposure time and cleaning cycles for compound selection.

Is 70 Shore A the only hardness

It is a common reference grade. Send any alternative hardness requirement for confirmation with the compound and dimensions.

Are EPDM O rings automatically approved for drinking water

No. Any required drinking-water or food-contact compliance must be supported by documentation for the exact supplied product.

Request an EPDM O Ring Quote

Send the AS568 number or ID × CS, quantity and drawing. Include the medium and concentration, normal and peak temperature, pressure or vacuum, groove dimensions and required inspection or compliance documents.

E-Mail: ptfetube@yozonetech.cn

WhatsApp / Tel / WeChat: +86 13752771911

Website: www.chinaptfetube.com

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