company
Hebei Shenwei Seal was founded in 1987 and is located in the Xiaobaoche Industrial Zone of Liugu Temple in Hejian City. It is located in the central area of the Beijing Tianjin Stone Triangle, west of the Beijing Kowloon Railway, and east of the Beijing Shanghai Railway. The Jingkai 106 National Road runs through the north and south, with a superior geographical location and convenient transportation. Our company adopts international advanced technology to develop and produce professional sealing materials. Our main products include metal wound gaskets, graphite gaskets, graphite packing, water level gauge gaskets, PTFE packing, PTFE gasket, PTFE soft rod, carbon packing, carbon packing ring, graphite composite gasket, metal wrapping gasket, and other sealing components. Our factory has a complete range of products, mainly used for dynamic and static sealing components in industries such as power, petrochemical, metallurgy, and machinery, The company adheres to the business philosophy of "customer first, forge ahead" and adheres to the principle of "customer first" to provide high-quality services to our customers. Welcome to visit!
Company Name Hebei Shenwei Sealing Materials Co., Ltd. Headquarters Location Hebei Business Scope Sealing Materials Company Type Co., Ltd
catalogue
1 Product Introduction
▪ spiral wound gasket
▪ Tetrafluoro packing
▪ Graphite Packing
▪ Carbon packing ring
▪ Metal coated pad
2 graphite ring
Product Introduction
spiral wound gasket
Metal spiral wound gaskets with excellent resilience can automatically adjust the pressure thermal cycle and vibration of pipeline systems, especially suitable for situations with uneven loads, easy relaxation of bonding forces, periodic changes in temperature and pressure, and impacts or vibrations. It is a static sealing component for flange connections such as valves, pumps, heat exchangers, towers, manholes, and handholes, widely used in departments such as petrochemical, mechanical, electrical, metallurgical, shipbuilding, pharmaceutical, atomic energy, and aerospace. For the convenience of installation in the appearance design of flange gaskets, 2 to 8 positioning straps are welded on the periphery of the gasket according to the diameter of the gasket, so that the positioning straps are buckled on the flange hole to prevent the gasket from shifting or falling off during installation, saving auxiliary materials and labor. Generally, they are divided into the following types: high-quality SUS304, SUS316 ("V" or "W" shaped) metal straps and other alloy materials are used for metal wound gaskets, and graphite, asbestos, PTFE Non asbestos and other soft materials are alternately overlapped and spiral wound, and the metal strip is fixed by spot welding at the beginning and end. The metal spiral wound gasket is the most resilient gasket among semi metal sealing gaskets. The structural density of the metal spiral wound gasket can be made according to different locking force requirements, and the maximum compression degree can be controlled by using internal and external steel rings. The surface accuracy of the flange sealing surface contacted by the spiral wound gasket is not high. Metal wound gaskets are particularly suitable for situations where the load is uneven, the bonding force is prone to relaxation, temperature and pressure fluctuate periodically, and there is impact or vibration. Spiral wound gaskets are ideal sealing components for flange connections such as valves, pumps, heat exchangers, towers, manholes, and hand holes
Tetrafluoro packing
PTFE Packing
PTFE packing is made from pure PTFE dispersed resin as raw material, first made into raw material film, then twisted and woven into packing. This packing has no other additives and can be widely used in valves and pumps with high cleanliness requirements and strong corrosive media, such as food, pharmaceuticals, paper and chemical fibers.
Applicable scope:
Maximum operating temperature: 260 ℃
Maximum operating pressure: 2.0MPa
PH value: 0-14
Graphite Packing
Purpose Equipment: Pumps, valves, rotating machinery
Industry: Chemical, petroleum, pharmaceutical, food and sugar, pulp, paper, and power industries.
Medium: Suitable for abrasive media containing solid particles, recommended for use in superheated steam, solvents, liquefied gases, syrups, and other abrasive fluids.
Chemical industry: can withstand media such as boric acid, dichloromethane, acetone, glacial acetic acid, etc. Root product specifications:
Graphite packing 3 × 3mm -50 × 50mm; Special specifications or various non-standard products can be formulated according to customer requirements.
Technical parameters of graphite packing:
Pressure 8-25Mpa
Temperature -100~280 ℃
Ph range 2-12
Linear speed 0-15 meters/second m/s
Graphite packing is used for sealing valves, pumps, and reactors in high-temperature, high-pressure, and corrosion-resistant media
Carbon packing ring
The packing pad is formed by pressing various packing into a ring. Suitable for various applications, such as aramid packing rings, pure tetrafluoro packing rings, hexagonal aramid tetrafluoro packing rings, asbestos tetrafluoro packing rings, asbestos graphite packing rings, high carbon fiber packing rings, tetrafluoro graphite packing rings, ramie packing rings, high water based packing rings, acrylic fiber packing rings, etc. Performance characteristics: selected in corresponding industries and equipment according to the performance characteristics of various packing rings.
Metal coated pad
Metal clad gasket refers to a composite gasket that uses non-metallic materials such as flexible graphite, asbestos rubber sheet, ceramic fiber, etc. internally, and metal sheets coated with a specific cold working process externally. According to the gasket cross-section, it is usually divided into two types: flat type coating and corrugated type coating. It is the most traditional type of sealing gasket and is suitable for sealing heat exchangers, pressure vessels, pumps, valves, and flange surfaces.
The advantages of metal coated gaskets are high strength, non fragility, and firmness, but limited rebound force. It is necessary to have a flat flange surface and high tightening force to achieve good results (which can be improved and coated with graphite plate). According to different materials, it can be combined into various forms such as 201, 304, and 316 stainless steel wrapped graphite (temperature resistance 650 degrees) wrapped gaskets, asbestos wrapped gaskets, ceramic fiber wrapped gaskets (1400 degrees) wrapped gaskets, and so on.
Cover gasket material: A3, stainless steel (201, 304, 316), copper, aluminum, etc
Wrapped gasket filling materials: flexible graphite (80%), asbestos (10%), asbestos free, ceramic fiber (10%), etc.
The main purpose of the wrapped gasket is to seal the flanges of larger diameter pressure vessels (such as heat exchangers, reactors, cast iron flanges, cylinder heads, boilers, etc.).
Sealing of various media such as pumps, pipe valves, pipelines, and flanges of various equipment. Suitable for medium and low pressure working conditions.
Welding of stainless steel coated gaskets: Welding metal mode can be used for working conditions greater than 1 meter or non corrosive; Welding is generally prohibited for small sizes of 316 and 316L.
Improvement of the wrapped gasket: To improve the sealing effect, the outer layer can be pasted with flexible graphite sheet.
Coating gasket is selected based on temperature resistance. Coating material: graphite - temperature resistance 650, corrosion resistance; Ceramic fiber - temperature resistant HA1200; HZ-1600.
Purchasers: Steel mills generally have 201+graphite and ceramic fibers; Power plant: square; Refinery: Heat exchanger, ribbed type.
Alternative products: Expanded PTFE tape for large pads without high temperature; No high-temperature small specification winding pad (low price); Asbestos pad.
Graphite ring
The graphite ring adopts flexible graphite tape or flexible graphite woven filler, and is molded into circular products of different sizes. Suitable for media such as hot water, high temperature, high-pressure steam, heat exchange fluid, nitrogen, organic solvents, hydrocarbons, low-temperature liquids, etc. Used for compressors, pumps, valves, chemical instruments, instruments, etc. Pressure (Mpa): 25 Temperature (℃): -200~850 Linear speed (m/s): 30 pH value: 0~14
Supply form:
Molded ring (cut or no cut)
The incision is divided into straight incision and oblique incision
Available sizes:
Minimum section: 5mm
Maximum diameter: 1000mm
Please provide specific drawings and dimensions for special forms of irregular packing rings, such as rectangles, with inner and outer sloping ports, or with caps.
Graphite (≥ 99.5%)
