Parker O-Ring Handbook.pdf

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Static O-Ring Sealing 4-26 Parker O-Ring Handbook Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 Fax: (859) 335-5128 www.parkerorings.com
Section V – Dynamic O-Ring Sealing 5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.2 Hydraulic Reciprocating O-Ring Seals . . . . . . . . . . 5-2 5.3 Surface Finishes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5.4 Temperature Effects on Dynamic Seals . . . . . . . . . . 5-5 5.5 Side Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 5.6 Direction of Pressure . . . . . . . . . . . . . . . . . . . . . . . . 5-5 5.7 Shock Loads and Pressures . . . . . . . . . . . . . . . . . . . 5-5 5.8 High Frequency Motion or Vibration. . . . . . . . . . . . 5-6 5.9 Squeeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5.10 Stretch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 5.11 Friction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7 5.11.1 Break-Out Friction . . . . . . . . . . . . . . . . . . . . . 5-7 5.11.2 Running Friction . . . . . . . . . . . . . . . . . . . . . . 5-7 5.12 Calculate Rubbing Surface . . . . . . . . . . . . . . . . . . 5-8 5.13 Methods to Reduce Friction. . . . . . . . . . . . . . . . . . 5-8 5.14 Friction and Wear. . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 5.14.1 Friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 5.14.2 Pneumatic Seals . . . . . . . . . . . . . . . . . . . . . . 5-11 5.14.3 Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 5.14.4 Interdependence of Friction Wear and an Effective Seal . . . . . . . . . . . . . . . . . . . . . 5-12 5.15 Spiral Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13 5.15.1 Speed of Stroke . . . . . . . . . . . . . . . . . . . . . . 5-14 5.15.2 Lack of Lubrication . . . . . . . . . . . . . . . . . . . 5-14 5.15.3 Pressure Differential and Direction . . . . . . . 5-14 5.15.4 Squeeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14 5.15.5 Shape of Groove and Split Groove. . . . . . . . 5-14 5.15.6 Temperature of Operation . . . . . . . . . . . . . . 5-14 5.15.7 Length of Stroke. . . . . . . . . . . . . . . . . . . . . . 5-14 5.15.8 Surface Finish. . . . . . . . . . . . . . . . . . . . . . . . 5-14 5.15.9 Back-Up Rings. . . . . . . . . . . . . . . . . . . . . . . 5-14 Parker O-Ring Handbook 5.16 Modifi cations for Special Applications . . . . . . . . 5-14 5.16.1 Small Amount of Leakage . . . . . . . . . . . . . . 5-15 5.16.2 Early Stress-Aging . . . . . . . . . . . . . . . . . . . . 5-15 5.16.3 Low Temperature Leakage. . . . . . . . . . . . . . 5-15 5.16.4 Excessive Swell (above 20%) . . . . . . . . . . . 5-15 5.17 Gland Dimensions for Reciprocating Hydraulic O-Ring Seals . . . . . . . . . . . . . . . . . . . . . 5-15 5.18 Floating Glands . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15 5.19 Pneumatic Reciprocating O-Ring Seals. . . . . . . . 5-16 5.20 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 5.21 Silicone Compounds . . . . . . . . . . . . . . . . . . . . . . 5-16 5.22 High-Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 5.23 Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 5.24 Gland Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 5-16 5.25 Floating Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16 5.26 Uni-Directional Gland . . . . . . . . . . . . . . . . . . . . . 5-17 5.27 Rotary Seal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17 5.28 Oscillating Seal . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19 5.29 Seat Seal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19 5.30 Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20 5.30.1 Calculation of Drive Belt Open Design . . . . 5-20 5.30.2 Calculation of Drive Belt Crossed Design . . 5-21 5.31 O-Ring Glands . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21 5.31.1 O-Ring Glands for Aerospace Hydraulic Packings and Gaskets . . . . . . . . . . . . 5-21 5.31.2 O-Ring Glands for Industrial Reciprocating Seals . . . . . . . . . . . . . . . . . . . . . . 5-30 5.31.3 O-Ring Glands for Pneumatic Floating Piston Ring Seals . . . . . . . . . . . . . . . . . 5-35 5.31.4 O-Ring Glands for Rotary Seals . . . . . . . . . 5-39 5.32 Dynamic Vacuum Sealing . . . . . . . . . . . . . . . . . . 5-44 Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 Fax: (859) 335-5128 www.parkerorings.com 5-1 Dynamic O-Ring Sealing
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aerospace climate control electrome
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50 th 50 th 50 th Anniversary Editi
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Section I - Introduction 1.0 How to
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1.4 Operation All robust seals are
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1.7.1 Static Seals In a truly stati
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1.11 Comparison of Common Seal Type
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Section II - Basic O-Ring Elastomer
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2.1.2 Rubber Rubber-like materials
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2.2.6 Chloroprene Rubber (CR) Chlor
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2.3 Compound Selection and Numberin
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O-ring seal, whether static or dyna
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Percent Compression 40% 30% 20% 10%
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Percent Compression 40% 30% 20% 10%
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Compression Set (% ) 100 Figure 2-1
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2.4.12 Thermal Effects All rubber i
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coeffi cient of expansion for that
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2.6 Aging Deterioration with time o
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A well-known rapid method for mater
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2.13.2 Temperature Temperature rang
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100 80 60 40 20 0 °C -50 °F -58 -
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misapplication might be greatly red
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c. Elongation Change Experience wil
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is possible to receive a part with
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Section III - O-Ring Applications 3
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3.1.2 Temperature Operating tempera
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O-Lube has some unique advantages.
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Parker Boss Kit Sizes Size Dimensio
Page 55 and 56: Recovery Percent of Original Delect
Page 57 and 58: 3.9.5 Fuels for Automobile Engines
Page 59 and 60: Parker Seal produces a number of co
Page 61 and 62: 3.9.16 Fungus-Resistant Compounds B
Page 63 and 64: 3.9.17.2 Concentrates Containing Mi
Page 65 and 66: Where temperatures do not go below
Page 67 and 68: Permeability Rate - CC/SEC/ATM Effe
Page 69 and 70: Underwriters’ Laboratories Approv
Page 71 and 72: Parker Seal Elastic Drive Belt Comp
Page 73 and 74: Parker O-Ring Handbook Gas Permeabi
Page 81 and 82: Section IV - Static O-Ring Sealing
Page 83 and 84: The 4-3 and 4-7 design charts are o
Page 85 and 86: (e) 0° to 5° (Typ.) 63 Break Corn
Page 87 and 88: 215 1.301 1.305 1.079 1.060 1.063 1
Page 89 and 90: Guide for Design Table 4-2 If Desir
Page 91 and 92: Parker O-Ring Handbook Gland Dimens
Page 99 and 100: Dovetail Grooves It is often necess
Page 101 and 102: Parker O-Ring Handbook This type of
Page 103 and 104: F .031 .016 RAD K Parker O-Ring Han
Page 105: Gland Detail 0° to 5° Break Corne
Page 109 and 110: When a cylinder rod extends out int
Page 111 and 112: It can be clearly seen from Figure
Page 113 and 114: 5.11 Friction Friction, either brea
Page 115 and 116: 5-9 Dynamic O-Ring Sealing Parker H
Page 117 and 118: For the same conditions, friction a
Page 119 and 120: 5.15 Spiral Failure A unique type o
Page 121 and 122: 5.16.1 Small Amount of Leakage 1. E
Page 123 and 124: Recommended dimensions for fl oatin
Page 125 and 126: for this service. See Section II, B
Page 127 and 128: 5.30.2 Calculation of Drive Belt Cr
Page 129 and 130: Parker O-Ring Handbook Gland Design
Page 131 and 132: 124 125 126 127 128 129 130 131 132
Page 133 and 134: 240 241 242 243 244 245 246 247 325
Page 135 and 136: 448 449 450 451 452 453 454 455 456
Page 137 and 138: X Gland Detail 0° to 5° Break Cor
Page 141 and 142: 5.31.3 O-Ring Glands for Pneumatic
Page 143 and 144: Parker O-Ring Handbook Design Table
Page 145 and 146: 5.31.4 O-Ring Glands for Rotary Sea
Page 147 and 148: Parker O-Ring Handbook Rotary O-Rin
Page 149 and 150: Parker O-Ring Handbook Rotary O-Rin
Page 151 and 152: Section VI - Back-Up Rings 6.1 Intr
Page 153 and 154: 6.4.2 Metal Non-Extrusion Rings In
Page 155 and 156: Parker Parbak 8-Series Dimensions (
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Parker Parbak 8-Series Dimensions (
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Back-Up Rings Cross Reference (Cont
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Parker O-Ring Handbook Section VII
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COMPOUND COMPATIBILITY RATING 1 - S
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Section VIII - Specifi cations 8.1
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Military Fluid Specifi cation Descr
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AMS (1) and NAS (2) Rubber Specifi
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Parker O-Ring Handbook Compound Sel
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Section IX Sizes Parker Series 2-XX
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Table 9-1: Parker Series 2-XXX O-Ri
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Parker O-Ring Handbook Parker Serie
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Parker Series 5-XXX O-Ring Sizes (C
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Parker Series 5-XXX O-Ring Sizes (C
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Series 5-XXX Locator Table Size I.D
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Parker O-Ring Handbook Inside Diame
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JIS B2401 Sizes JIS Thickness Inner
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Parker O-Ring Handbook Unusual Size
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Parker O-Ring Handbook Unusual Size
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Section X - Appendix 10.1 O-Ring Fa
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10.1.1.2 Extrusion and Nibbling Ext
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10.1.1.6 Installation Damage Many O
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Parker Seal also has the capability
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10.3 Glossary of Seal and Rubber Te
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Flash: Excess rubber left around ru
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(b) REP (Roentgen equivalent-physic
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10.4 Abbreviations ACM Polyacrylate
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Compound Shrinkage Class Compound N
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Table 10-8: Dimensions From Standar
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Parker O-Ring Handbook Dimensions F
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Appendix 10-32 Parker O-Ring Handbo
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Index — A — Abbreviations. . .
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International O-Ring Standards and
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Offer of Sale 1. Terms and Conditio
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Parker’s Total inPHorm Take the g
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