Rotary Seal Design Guide - Seals Unlimited

ProTech Bearing IsolatorsCatalog EPS 5350/USAMaterials-S — 304 Stainless SteelCorrosion Resistance: Excellent… exceeding that of Type302 in a wide variety of corrosive media including hotpetroleum products, steam combustion gasses. Frequentlyused in the food and beverage industry which requires a highdegree of sanitation and cleanliness.316 Stainless SteelCorrosion Resistance: Good resistance to a wider range ofchemicals than Type 304. Highly resistant to the complexsulphur compounds used in pulp and paper processing. Alsoresists attack of marine and corrosive industrial atmospheres.This type is also highly resistant to pitting and withstandscorrosive actions of acids, dyes, and salts used in theprocess, textile and pulp industries. Applications include themanufacture of pumps, valves, textile and chemicalequipment.Carbon SteelCorrosion resistance: Poor with no corrosion treatment.Minimum physical properties of 36,000 psi yield strength and58,000 psi tensile strength. Applications include a widevariety of industrial equipment.Table 8-6. Standard Seal Material Temperature RangeMatl.CodeMaterial-1 20210 Proprietary Graphite FilledPTFE-2 20999 (Food Grade FDA) MineralFilled PTFE-5 20113 Proprietary Graphite FilledPTFEMin.TempCont.Temp.PeakTemp.-40 °F 250 °F 250 °F-40 °C 121 °C 121 °C-40 °F 250 °F 250 °F-40 °C 121 °C 121 °C-40 °F 250 °F 250 °F-40 °C 121 °C 121 °C-7 20995 Anti Microbial PTFE -40 °F 250 °F 250 °F-40 °C 121 °C 121 °C-8 20990 FDA 3A PTFE -40 °F 250 °F 250 °F-40 °C 121 °C 121 °C-B Bronze C93200 (SAE 660) -40 °F 400 °F 400 °F-40 °C 204 °C 204 °C-S 304 Stainless Steel -40 °F 400 °F 400 °F-40 °C 204 °C 204 °CSpecial 316 Stainless Steel -40 °F 400 °F 400 °FSpecialCarbon Steel-40 °C 204 °C 204 °C-40 °F400 °F400 °F-40 °C 204 °C 204 °CNote: Other materials and custom compounding available. Contact Parkerfor more information.8803/28/068-15 Parker Hannifin CorporationEPS DivisionToll Free: (800) 233-3900www.parkerseals.com