Cixi Donfeng Sealing & Packing Products Co., Ltd.

Spiral wound gasket 1. Structure The wound style gasket consists of "v-shape"(or"w-shape")metal tape and nonmetal tape, which are overlapped each other and wound continuously.To fasten the metal tape, both its start point and end point are tack welded. 2.Performance and features 1. Wide range of applicable working condition, high temperature and high pressure resistance, applicable to super low temperature and vacuum condition.Chemical resistant gasket is available under various medium, through change of composition of gasket. 2.Strong stress compensation, stable and reliable sealing performance even under frequent pressure fluctuation condition. 3.Perfect sealing performance. 4.Normal requirement of flange surface finishing which contact with gasket. 5.Easy installation and low pre-tightening stress of gasket. 3.Kinds of gasket 1.A.Wound style gasket consists of four type:basic type, with inner ring, with outer ring, and with inner and outer rings. B.Heat exchanger wound style gasket:basic type and with inner and outer rings. 2. Normally matrial used: A.Steel tape:08f, 0cr18ni9(304), 0cr18ni9ti, 1cr18ni9ti(321), 0cr17ni12, m02(316), 00cr17ni14m02(316l). B.(cold roll)steel plate for inner and outer ring:outer ring:mild steel, 0cr13 and 0cr18ni9 Inner ring:same as steel tape, special order is a available through negotiation. C.Nonmetal tape:flexible graphite, special made asbestos, teflon and non-asbestos paper. 4.Scope of application 1. Working temperature:-196íµ -700íµ(not higher than 600íµ in oxidic medium) 2.Working pressure:ín25mpa 3.Gasket coefficient:m=2.5-4 4.Min.Pre-tightening specific pressure:y-68mpa 5.Max.Machinable size:-2800mm

Die formed graphite ring Die formed graphite packing ring is made of pure flexible graphite , or graphite with nikle/ss316/brass wire reinforced. Performance and features Perfect self lubricant performance. High elasticity coefficiency. Scope of application Working temperature:~200~400íµ(200~800íµ under non-oxidation atmosphere) Working pressure:ín35mpa Density:1.4 ~ 1.6 g/cm3 Max.Machinable size:5~850mm

Rubber extrusion Due to its excellent elasticity, performance of insulation, plasticity, insulate air&water, rubber products are widely used in industries, agriculture, national defence, transportation, mechanism, medical industries and our daily life. We can make the rubber products according to your provided drawings and samples.

Flexible graphite packing 1.Structure Composed of braided flexible graphite.Various reinforced material is available depending upon the requirement, such ad carbon fiber, copper wire, 304 wire, 316l wire or nickle alloy wire.Normally used at static sealing location. 2.Performance and feature 1.One of the best efficient sealing material under high temperature and high pressure. 2.Perfect sealing performance, stable and reliable. 3.Scope of application 1.Working temperature:~600íµ 2.Working pressure:ín27.5mpa 3.Applicable to the medium ph range:0-14 4.Product size:3x3mm-50mmx50mm

Non-asbestos sheet Non-asbestos sheet this sheet is composed of fibres of high temperature resistance and fine chemical stability. It is adhered by sythetc adhesive and nonstick agent is applied on surface. It has an outstanding creep resistance under high temperature and heavy load. It creats a reliable sealing basis. The product has a flexible resistance, fatigue resistance, high tensile strength. It is very easy in use. So it eliminates asbestos rubber sheet essentially and thoroughly. Specification: 1.5m x 1 m, 1.5 x 1.35m, 1.5 x 2m, 1.5 x4m, Thickness: 0.5-5mm Working pressure: 100 bar Working temperature black: 400~(3; blue: 370~c Compressibility (astm f36): 7 - 17% Tensile strength: 8n/mm Density (di n3754 ) 1.8g / cm Ph value: 2 - 12 Asbestos rubber sheet; Asbestos rubber sheet with wire mesh reinforced; Oil-resistance asbestos rubber sheet; Acid resistance asbestos rubber sheet; Non asbestos jointing sheet;

Impac packing With our years of manufacturing experiences, our researches and tests on the impac packing, we have found that impac enjoys much higher efficiency than any other common random packing in all aspects. Introduction: impac packing is new and different from various traditional tower packing. Its surface area per cubic meter and the size of the packing are two independent variables. Therefore, to meet the special technology requirements, we can make this impac packing with larger or smaller surface area and with larger or smaller size. Impac is complicatedly structured like a network being composed of ribbed silk, rod body and tapered parts. It will increase the drop to the maximum limits. With the uniform distribution of the packing structure and with its favorable shape, impac will make a more uniform distribution of the gas or liquid, and enhance surface humidity at the same time. Impac enjoys high efficiency and low pressure advantages. It can be available of metals or plastics.

Service limits Ph range: 0-14 Temperature limits: -260~ + 260 f¦(-500/+500fpf) Pressure limit: 20mpa (or 2900 psi; or 200kgf/cm2) Physical properties Material: 100% ptfe, soft and excellent elasticity. Density: 0.7~0.8g./cm3 (43~49.5lbs./cu. Ft.3) Elongation: 20% Matrix tensile strength: 30mpa (4260 psi) Creep relaxation (astm f38): 51% Sealablity (astm f 37a): 0.1 ml/hr. Description Expanded ptfe joint tape is a multi-purpose gasket tape manufactured from 100% expanded ptfe fluorocarbon material, supplied as a continuous low density tape with a self-adhesive backing strip. It is soft and spongy, permitting it to conform easily to all surface irregularities and to compress to a thin ribbon under pressure. Application Expanded ptfe joint tape is recommended as a gasket tape in steel, glass-lined, pvc and fiberglass pipe flanges, fume ducts, concrete lids, heat exchangers, fiber glass reinforced plastic vessels, pump housing flanges, steam vessel flanges, manhole and manhole covers, ceramic joints, ventilation ducts, hydraulic and pneumatic systems, water supply systems and turbine cases. Chemical resistance Because expanded ptfe joint tape is manufactured from 100% ptfe, it is an inert material which can be used in many applications against corrosive environments, except molten alkali metals and elemental fluorine. 24b will not contaminate media and can be used in food and drug equipment applications.