GASKETS and SHEET JOINTINGS

Transcription

1 NO WAY THROUGH GASKETS and SHEET JOINTINGS

2 PTFE Gasket Sheets The most modern manufacturing technologies enable TEADIT to produce a new generation of eptfe gasket materials with multi-directional fibre structure in form of sheets and tapes. TEADIT 24 SH Multi-directionally expanded PTFE-sheet chemical resistance: ph range 14 temperature range: -21 up to +26 C (-346 F up to 5 F) operational pressure: from vacuum up to 2 bar (2,9 PSI) non-polluting non-toxic not combustible Standard dimensions: 15 x 15mm in.5mm, 1.mm, 1.5mm, 2.mm, 3.mm, 5.mm and 6.mm thickness Approvals and tests: FDA, DVGW, BAM, TTRL does not age or dry out excellent malleability compensates for damage and irregularities on sealing area outstanding dimensional stability, drastically reduced cold-flow and creep makes highest tightness class possible (with adequate gasket pressure) well suited for applications with limited bolt torque By adding filler materials, certain characteristics can be influenced. This has been optimally realised with the development of TEADIT TEALON TF158 and TF159 TEALON TF158 Restructured PTFE filled with Barium Sulphate suitable for use with acids and caustics TEALON TF159 Restructured PTFE filled with Silica suitable for use with concentrated acids Temperature resistance: -21 up to +26 C (-346 F up to 5 F) maximum operational pressure: 83 bar (1,2 PSI) reduced thermal expansion highly suited for applications with thermal cycling high residual stress good cross-sectional sealability even at low surface pressure does not age or get brittle Approvals and tests: FDA, DVGW, BAM, ROTT and HOBT-2 (TTRL Montreal) Data-sheets available on request. Standard dimensions: 15 x 15mm in 1.5mm, 2.mm and 3.mm thickness TEALON TN is a trademark of E. I. DuPont De Nemours and Company and is used under license by TEADIT

3 12 NA 11 Carbon fibres and graphite bound by NBR KTW, DVGW Non Asbestos Sheet Jointings NA 12 Aramid fibres bound by NBR KTW, DVGW NA 14 Cellulose fibres bound by NBR Product standard of fibre sheets: 15 x 16mm or 15 x 32mm from.5mm up to 3.mm thickness General use: Max. temperature: + 18 C (356 F) Max. pressure: 35 bar (51 PSI) Recovery ASTM F 36 A: 55% Compressibility ASTM F 36 A: 13% General purpose gasket sheet: Max. temperature: + 4 C (752 F) Max. pressure: 11 bar (1,595 PSI) Recovery ASTM F 36 A: 6% Compressibility ASTM F 36 A: 1% High-grade gasket sheet for elevated temperatures, e.g. for use with steam: Max. temperature: + 45 C (842 F) Max. pressure: 13 bar (1,885 PSI) Recovery ASTM F 36 A: 6% Compressibility ASTM F 36 A: 9% GP 152 Pure expanded flexible graphite sheet GR 152 Pure expanded flexible graphite sheet with plain metal insert (316) max. Temp C (842 F), with steam up to 65 C (1,2 F) Recovery ASTM F 36 A: 1% Compressibility ASTM F 36 A: 4% Chemical resistance: ph - 14 max. Temp C (842 F), with steam up to 65 C (1,2 F) Recovery ASTM F 36 A: 2% Compressibility ASTM F 36 A: 45% Chemical resistance: ph - 14 GE 152 Pure expanded flexible graphite sheet with tanged metal insert (34, 316) max. Temp C (842 F), with steam up to 65 C (1,2 F) Recovery ASTM F 36 A: 2% Compressibility ASTM F 36 A: 4% 2 Chemical resistance: ph Product standard for graphite sheets: 1 x 1mm in 1. to 3.mm thickness GE 152 is also available in 15 x 15mm in 2. and 3.mm thickness (on special request)

4 A global player in fluid sealing technology We are manufacturing in modern plants in America and Europe by using the most advanced manufacturing methods all plants are certified according to ISO 91 TEADIT - as an active member of both the ESA and FSA organisations is taking part in internationally coordinated developments concerning the fluid sealing industry. As a partner to the industry we share our experience and know-how with our customers around the world: Whether it concerns a simple, classical, universal cut gasket made from fibre sheet, a special sealing solution from one of our biaxially expanded PTFE tapes or sheets, or a complicated and complex gasket made to some customer s specifications you can always rely on us. TEADIT - your partner in sealing technology In close cooperation with many technically competent distributors, service centres and representatives around the world, we offer practical support and custom-made sealing solutions to customers of a wide variety of different industries.

5 Flat ring gaskets with and without metal eyelets: The simple flat gasket cut from sheet material remains the most widely used method of flange sealing. The characteristics, available from our wide range of gasket materials, comprise good adaptability to rough or uneven sealing surfaces, excellent resistance against gases and fluids at high pressure and fluctuating temperature, as well as resistance against aggressive media. However, in today s world of environmental awareness and the need for ever tighter control of emissions, the simple flat gasket may not meet all the latest mandatory controls. TEADIT has met these ever increasing demands and laws regarding environmental and safety issues (e.g. TA-Luft) by developing a full range of gaskets reinforced with metal eyelets. Cut gaskets with metal eyelets, made from soft compressed fibre materials or graphite, have a number of distinct advantages: High resistance against blow-out Approval for use with dangerous gases in connection with smooth flanges, according to UVV 29 for gases and VdTÜV supplement AD-B7 and AD-B8 Improved effectiveness of seal against dry gases and creeping media No contamination of clean media like paints, varnishes, pharmaceutical products, food-stuffs, etc. Prevents chemical attack of gasket material Prevents erosion of soft gasket material by abrasive media and/or high fluid flow velocity Increases mechanical stability and improves thermal service parameters Improves handling of large gaskets ensures electrical conductivity in case of insulating gasket materials like PTFE Material for metal eyelets: (316 Ti) Using cut gaskets with metal eyelet reinforcement can considerably improve sealability and operational safety. Because of the metal reinforcement of the inner circumference of the gasket, and by choosing a suitable gasket material, applications with a maximum temperature of 65 C can be sealed durably and reliably.

6 Double-jacketed gaskets TEADIT double-jacketed gaskets are particularly suited for applications like heat-exchangers and boilers. The gasket is constructed of a soft, heat resistant, non asbestos filler material, which is completely enclosed in a two-piece metal jacket. When pass partition bars are required, we offer a welded pass bar construction. With a welded pass bar arrangement the fluid is retained by the primary seal at the inner diameter of the gasket. Thus the primary seal maintains its function, providing a seal of higher integrity. Many standard bar configurations are available, special configurations on request. the metal jacket covering the filler material prevents contamination ensures high elasticity and recovery nearly any dimension and shape can be made the welded construction of the bars results in two independent seals: the primary seal at the inner diameter and the secondary seal at the outer diameter. Standard materials: Metal jacket: carbon steel, soft iron, 34, 316L Filler material: graphite Manhole gaskets and lid seals By using a new, temperature-stable, corrosion-resistant and chemically resistant heavy-duty fabric, the gaskets conform well to any flange or lid geometry, irrespective of the fastening mechanism. The recovery together with the thermosetting reinforcement of the fabric ensures sustained tightness between maintenance intervals, even at fluctuating load. After installing the gasket, at start-up of the boiler, the bolts (fastening device) have to be re-tightened, after this the gasket will have reached the ideal operational condition. Component approval according to TRD 41 Fabric/elastomer gaskets according to TRD 41, 42, 61, 611 and component identification TÜV D.99-1.C

7 Gasket tapes 37 Gasket-tape braided from pure eptfe-fibres, impregnated with PTFE-dispersion and silicone oil. Temperature range from 1 C up to + 26 C (-148 F up to 5 F) Can be used with most chemicals, even very aggressive ones (ph 14) Adapts easily to gasket surfaces Ideal for sealing large lids, etc on chemical applications. 311 Similar to style 37, but made from pure, expanded flexible graphite. Style 311 is also available with Inconel wire reinforcement. eptfe pure flexible graphite Excellent heat resistance from 24 C up to + 45 C (-4 F up to 842 F), with steam up to 65 C (1,2 F). Can be used in connection with most media, including steam, fuel, gas, oil, chemicals, etc. (ph 14) Expanded PTFE-joint-sealant-material TEADIT 24 B, 24 BB und 25 BI TEADIT manufacture the complete range of EXPANDED PTFE gasketing - from the standard gasket from a spool joint sealant TEADIT 24B, to the wider version TEADIT 24BB, up to the multi-directionally expanded tape TEADIT 25BI which has equal tensile strength both lengthwise and crosswise. The multi-directionally expanded TEADIT 25BI combines all the advantages of expanded PTFE with minimal cold-flow and creep. This is the ultimate solution for the toughest sealing problems. Temperature range: from 21 C up to +26 C (-346 up to +5 F) Chemical resistance: ph 14 Please ask for comprehensive Expanded PTFE-products catalogue.

8 PTFE envelope - gaskets Y UR UR-D The chemical resistance of rubber gaskets and compressed fibre gaskets can be considerably improved by inserting them into a PTFE-envelope. Because of the good adaptability of PTFE, particularly low sealing rates can be achieved with adequate gasket pressure. UE UE-D By choosing particularly suitable styles of PTFE with low cold-flow (e.g. Dyneon TFM 16), and by using special combinations of insert materials, e.g. corrugated metal rings with graphite cover on both sides, even the most demanding sealing problems (e.g. enamelled flanges or applications with serious thermal cycling) can be solved. PTFE-envelope gaskets are being widely used in the food and beverage industry, as well as in the pharmaceutical and chemical industry, because of their anti-adhesive properties and the physiological harmlessness of PTFE. They can be removed quickly and easily and without residue from the flange faces, new gaskets are installed in no time. By adding 2% of conductive pigment to the PTFE-resin, or by adding earth connection points to the corrugated metal ring, electrical conductivity can be assured. For use with diffusing or strongly toxic media (e.g. chlorine gas), special PTFE-envelopes with,75mm thick material and reinforced inner diameter acting as diffusion barrier, can be produced.

9 PTFE envelope - gaskets Y Machined PTFE-envelope, normally with only one insert. For uncritical applications with low temperature and low pressure. Insert at customer s option. UR Machined PTFE-envelope for demanding applications. No notch-effect at inner diameter. These PTFE-envelopes can be fitted with various inserts or insert combinations. Larger diameters are produced in welded (folded tape) construction. A complex welding process avoiding the problematic overlapping of the PTFE-material makes the production of large PTFE-envelopes possible. Those have the same features and high quality standard as the smaller, machined, seamless versions. UR-D Like style UR, but with additionally reinforced inner diameter as diffusion barrier. Inserts at customer s option. UE Machined PTFE-envelope for flanges according to DIN 2691 (tongue and groove) and DIN 2692 (male and female). Inserts at customer s option. UE-D Like style UE, but with additionally reinforced inner diameter as diffusion barrier. Inserts at customer s option.

10 Spiral-wound gaskets For applications with high temperature variations (thermal cycling), and/or pressure variations, and/or flange rotation problems etc., gaskets with adequate residual stress (stress retention), flexibility and recovery are needed. TEADIT spiral-wound gaskets have been designed to meet these demanding requirements. Spiral-wound gaskets are made of a preformed metallic strip and a soft filler material (PTFE or graphite), wound together under pressure, and optionally with an inner and/or outer guide ring. The metal strip holds the filler, resulting in excellent mechanical resistance, resilience and recovery. filler materials max. temperature C ( F) PTFE (5 F) graphite *(842 F) * up to 65 C (1,2 F) with steam and under inert conditions The metallic outer ring: The metallic inner ring: serves to centre the gasket and as protection against overloading protects the windings on the inside from high temperatures, avoids creation of turbulences within the pipe work, protects the spiral from corrosion avoids deformation of the gasket in radial direction (buckling) Materials for metal strip: , , 1.444, 34, 316L, 321 Our production offers extensive possibilities: special sizes production according to customers specifications production of single gaskets gaskets made of special materials Materials for inner ring: , , 1.444, 34, 316L, 321 Materials for outer ring: carbon steel with corrosion protection (cathodic protection) Additional materials on request. Tables with spiral-wound gasket dimensions DIN and ASME - are available on request.

11 Kammprofile gaskets TEADIT Kammprofile gaskets offer outstanding flexibility and recovery, assuring seal integrity under pressure and temperature fluctuations, flange rotation, bolt stress relaxation and creep. TEADIT Kammprofile gaskets are used by the chemical and petrochemical industry, as well as in power stations and refineries, on both standard pipework and specialist applications, e.g. shell and tube heat exchangers, etc. Kammprofile gaskets are constructed from a precision serrated metallic core with soft gasket materials flexible graphite or expanded PTFE - bonded to either side. Depending on the kind of metal used, TEADIT Kammprofile gaskets can be used for all media from ph to 14 TEADIT Kammprofile gaskets can be delivered in different styles and qualities: Materials for metallic core without outer location ring flat shape curved shape ,1.4571, 34, 316L, 321 Other materials on request Materials for sealing face: with integral outer location ring (with preset breaking point) eptfe: up to 26 C (5 F) graphite: up to 45 C (842 F) up to 65 C (1,2 F) with steam with loose fitting outer location ring

12 Other Products: Stuffing box packings expanded PTFEjoint-sealant-materials JAMPAK and the SEAL-CAGE system Austria: TEADIT International Rosenheimer Str. 1 A-633 Kufstein/Tirol Tel.: Fax: mail@teadit-europe.com Italy: TEADIT Italia S.p.A. Via Vanzago 13 I-253 Paratico (BS) Tel.: Fax: sales@teadit.it Cologne (Germany), Houston (USA), Edmonton (Canada), Rio de Janeiro (Brazil), Campinas (Brazil), Buenos Aires (Argentina) The contents and presentation of this catalogue are the property of TEADIT Austria, and protected under the Copyright act. Reproducing, copying or translation of the contents and diagrams is strictly prohibited unless permitted by TEADIT. Since all properties, specifications and application parameters shown throughout this catalogue are approximate and may be mutually influenced, your specific application should not be undertaken without independent study and evaluation for suitability. All technical data and advice given is based on experiences TEADIT has made so far. Failure to select proper sealing products can result in damage and/or personal injury. Properties, specifications and application parameters are subject to change without notice. TEADIT does not undertake any liability of any kind whatsoever. Juli 22 - TEADIT