Soft Gasket Presentation
Transcript: Cut Gasket Z W Sohaib Hemeadah Arabian Bros Gasket X e h e 4 S K G 5 Soft Gasket (Sheet Gasket) Sometimes being soft in tense conditions is an advantage A is a term used when referring to a gasket material that is easily compressed under a low bolt load. T Types Types of Soft Gasket: 1- Compressed Non-Asbestos Sheet 2- Tanged Graphite Sheet 3- Rubber Sheet 4- PTFE Sheet 5- Envelope Gasket (PTFE with Non-Asbestos) A Applications Applications: Soft gaskets are used in a wide range of applications such as for pipe flanges, heat exchangers, compressors and bonnet valves, to name just a few. Compressed Non-Asbestos Sheet B Most manufacturers of non-asbestos sheet materials use synthetic fibers, like aramid or Kevlar, in conjunction with an elastomeric binder. T Types Types 1- NON ASBESTOS GASKET JOINTING SHEET STYLE 01 2- STEEL NON ASBESTOS GASKET JOINTING SHEET STYLE 02 3- NON ASBESTOS GASKET JOINTING SHEET STYLE 03 01 Style 01 NON ASBESTOS GASKET JOINTING SHEET STYLE 01 Suitable for water/oil resistant gasket material for light to medium loading. Suitable for low operating pressure, e.g. transformers, compressors and also used for easily deformable components with low surface pressure like valve covers and pans in internal combustion engines. General Data Material Composition (Type of fiber ) Aramid Fiber, Mineral Fiber Binders NBR Operating Condition: Max. Peak Temp 300°C Max. Continuous Temp 220°C Max. Continuous Temp. with steam 160°C Max. Operating Pressure 80 Kg/cm2 Thickness | From 1.5 to 6 mm Tolerance: Thickness | < 1mm = ± 0.10 mm > 1mm = ± 10% Length | ± 50 mm Width | ± 50 mm 03 Style 03 NON ASBESTOS GASKET JOINTING SHEET STYLE 03 Suitable for high performance, oil resistant gasket material with excellent thermal, chemical & mechanical properties. Suitable for compressors, pipelines, transmission, gas meters and internal combustion engines, pipe unions & pumps etc. General Data Material Composition (Type of fiber ) Aramid Fiber, Mineral Fiber Binders High quality NBR Operating Condition: Max. Peak Temp 400°C Max. Continuous Temp 270°C Max. Continuous Temp. with steam 240°C Max. Operating Pressure 150 Kg/cm2 Thickness | From 1.5 to 6 mm Tolerance: Thickness | < 1mm = ± 0.10 mm > 1mm = ± 10% Length | ± 50 mm Width | ± 50 mm Tanged Graphite Sheet C range of graphite sheet sealing materials are manufactured from highly pure exfoliated graphite flake, with/without a reinforcing metallic core 316L with the standard product A Application Applications Tanged graphite gasket laminates by Arabian Broz Gasket are suitable for moderately high temperature/high pressure gasket applications with a wide range of media. Using mechanical means or certain adhesives, graphite foils can be attached to the reinforcing core. 500°C (650°C in steam) -200°C 140 bar 25000 Operating Conditions Peak Temperature Minimum Temperature Maximum Operating Conditions Pressure P x T, Max Rubber Sheet D Rubber is a soft gasket material. A wide range of elastomers can be used, such as neoprene, nitrile, EPDM and natural rubber. T Types Types EPDM, (Ethylene Propylene-Diene Monomer) 1 Natural Rubber, (NR) (Pure Gum Amber) 2 3 Neoprene® (Chloroprene) (CR) 4 Nitrile (Buna-N) (NBR) 5 Silicone(SI) (Polysiloxane) EPDM, (Ethylene Propylene-Diene Monomer) This polymer has superior resistance to ozone, heat and sunlight applications. It has good resistance to water and steam. Resistant to: Animal and vegetable oils, ozone, strong and oxidizing chemicals. Poor resistance: to petroleum based fluids. Attacked by: Mineral oils and solvents, aromatic hydrocarbons. Hardness: 75 ± 5Shore A Temperature Range: -45ºC to 120 ºC Natural Rubber, (NR) (Pure Gum Amber) It is a natural product extracted from tropical plants. It has excellent flexibility, tensile elongation & abrasion resistant. Resistant to: Most moderate chemicals, wet or dry, organic acids, alcohols, ketones, aldehydes. Poor resistance: petroleum based fluids. Attacked by: Ozone, strong acids, fats, oils, greases, most hydrocarbons. Hardness: 65 ± 5Shore A Temperature Range: -50ºC to 90 ºC Neoprene® (Chloroprene) (CR) is a synthetic polymer that offers Good weathering resistance. Flame retarding. Moderate resistance to petroleum based fluids. Resistant to: Moderate chemicals and acids, ozone, oils, fats, grease, many oils, and solvents. Moderate resistance: petroleum based fluids. Attacked by: Ozone, strong acids, fats, oils, greases, most hydrocarbons. Hardness: 75 ± 5 Shore A Temperature Range: -35ºC to 125 ºC Nitrile (Buna-N) (NBR) is an elastomer that has superior resistance to petroleum based hydraulic fluids, alkalis, acids, aliphatic and aromatic hydro carbonates, animal & vegetable oils Resistant to: Many hydrocarbons, fats, oils, greases, hydraulic fluids, chemicals Attacked by: Ozone (except PVC blends), ketones, esters, aldehydes, chlorinated and nitro hydrocarbons Hardness: 75 ± 5 Shore A Temperature Range: -35ºC to 125 ºC Silicone(SI) (Polysiloxane) has high temperature properties as