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ASME B16.21 Non-Asbestos Fiber Materials Non-Metallic Flat Gaskets1
Sealing Gaskets, Non-Asbestos Fiber Gasket, Non-Metallic Flat Gasket
Xiamen Qishine Industry Co., Ltd.
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Product Description Product DescriptionOur non-asbestos gasket is produced using a special heat-resistant fibre, a natural rubber compound and a heating and compression moulding process. This effectively obviates the need for asbestos rubber sheets, ensuring a comprehensive elimination process. The maximum dimensions are 2700 x 2700 mm.Non-asbestos fibre materials are referred to as such due to their capacity to fill the gap in the range of gasket materials that was previously occupied by asbestos. Asbestos, a material that has now been proven to be hazardous,boasted significant heat resistance properties, which is why it was extensively used in high-temperature applications. Following the prohibition of asbestos, alternative materials were required to meet the same functional requirements while eliminating the associated health risks. Consequently, non-asbestos materials were developed to perform the same function, but without the associated danger to human health.These materials are now commonly consist of aramid fibre (Kevlar) and non-organic fibres, which are in turn blended with different polymers to meet different applications; most commonly nitrile rubber, for fuel and oil resistance. These materials can also be graphite coated for non-stick and steam resistance, mixed with PTFE for excellent chemical resistance, or with EPDM for potable water applications. Common Industries Utilising Non-Asbestos Fibre, Non-asbestos Gasket · Oil and Gas· Chemical Processing· Petrochemical Industry· Process Industry Dimensions of Non-Metallic Flat Gaskets, ASME B16.21 to be used with Raised Face flanges ASME b16.5 Gasket Dimension Class 150 to 900 NPS 1/2 to 24NPSd1d2Class150Class300Class400Class600Class9001/22148545454643/427576767677013367737373791.1/44276838383891.1/24886959595982601051111111111432.1/273124130130130.21653891371491491491683.1/2102162165162162 411417518117819420651411972162132412486168222251248267289821927930830532135910273340362359400435123244104224194574981435645148648349252116406514540537565575184575495975946136382050860665464868369924610718775768791838 General notes:· Dimensions are in millimeters unless otherwise indicated.· d1 = Inside diameter.· d2 = Outside diameter.· Dimensional tolerances outside diameter NPS 12 and smaller: +0 / -1.5 mm.· Dimensional tolerances outside diameter NPS 14 and larger: +0 / -3.0 mm.· Dimensional tolerances inside diameter NPS 12 and smaller: ± 1.5 mm.· Dimensional tolerances inside diameter NPS 14 and larger: ± 3.0 mm.· Thickness (t) specified by customer. Products to our clients. Our Superiority Why choose Qishine?High Quality: Qishine provide high quality products.Reasonable and Competitive Price: Our products are sales well in oversea markets,especially in Europe, South America and Africa.Professional Service: Qishine's sales team have rich experience in exporting and projects service.Fast Delivery: Fast deliver the goods to all of the world.One Stop Service: We provide gaskets,screws,flanges,pipes and fittings.Best choice for EPC companies and projects' construction.Who choose Qishine? Application:FAQ About Sample 1.We can offer samples for testing,courier freight afforded by the receiver . 2.For cost saving, freight prepaid is recommended. 3.Special requirement accepted About Order 1.Payment Term: T/T, L/C2.Trade Term: EXW, FCA, FOB, CFR,CIF,DDU3.Documents: CI, PL, CO,MTC and BL. About After Sale ServiceProduct Quality Guarantee: We guarantee our products quality for 12months from the date of BL.
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