GarraSeal 90 Asbestos Gasket Sheet

Recommended for steam, water, gas, salt solutions, some oils and use for pipe flanges, boiler manholes, steam engines, compressors, internal combustion engines, and pumps

GarraSeal 70 Homogenous Pure Graphite Sheet

A superior replacement for asbestos gaskets. It is highly chemical resistant and thermally stable.


Forces Acting on a Gasketed Joint

A seal is created by compressing the gasket material and causing it to flow into the imperfections of the sealing surface.

Surface Finishes (RMS)

Suggested Industry Standard

Gasket Rating Chart

For Standard ANSI Flanges

Review of 100 Gasket Failures

Correct Bolting Patterns

Circular Four Bolt



Non-circular Multi-bolt

Square Four Bolt

Circular Multi-Bolt

Product Quality

  • GarraSeal is manufactured to PT. Gapura Raya’s specification requirements by American Packing Industries in the Philippines
  • Today, American Packing Industries is the leading manufacturer and supplier of compressed gasket, packings, metallic gaskets and other industrial products.
  • In 1998, achieved its ISO 9002 Certification from SGS Yarsley International Certification Services Ltd. and migrated to ISO9001:2000 in 2003, and currently certified under ISO 9001:2008.
  • PT. Gapura Raya’s GarraSeal brand of products are manufactured to the highest international standards

Gaskets

Asbestos Gasketing Products

GarraSeal 90 Asbestos Gasket Sheet
GarraSeal 90 is an excellent general purpose gasket. It is a compressed Chrysotile (white) asbestos fibers with SBR binder, which is fully cured. It is coated with special anti-stick release agent to…

GarraSeal 95 Asbestos Gasket Sheet with Wire Insert
GarraSeal 95 is a white asbestos gasketing material inserted with wire. It is compounded with a heat resistant binder for high temperature applications of up to 538ºC (1,000ºF). GarraSeal 95…

Non Asbestos Gasketing Products

GarraSeal 30 Non Asbestos Gasket Sheet Nitrile Binder
Color : Yellow Binder : Nitrile Temperature : 382ºC (720ºF) Pressure : 1,100 psi Equivalent Garlock Code : 3000 Equivalent Chesterton Code : 455 / 450 Sheet Size : 1.5m x 1.5m x 1/32" 1.5m x…

GarraSeal 60 Carbon Fiber Gasket - Nitrile Binder
GarraSeal 60 is a high temperature non asbestos gasketing material manufactured from high grade carbon fibers which has been bonded with quality rubber. GarraSeal 60 is highly recommended for use in steam,…

GarraSeal 70 Homogenous Pure Graphite Sheet
GarraSeal 70 flexible graphite sheet is made from pure graphite without additives or binders. It is a superior replacement for asbestos gaskets. GarraSeal 70 is highly chemical resistant and thermally…

GarraSeal 75 Flexible Pure Graphite Sheet with 316 SS Foil Insert
GarraSeal 75 is suitable for service over a wide range of pressures and temperature. It has low creep relaxation, resists thermal shock, is highly chemical resistant, and seals easily under low to moderate…

GarraSeal Gasket Summary Sheet

Gaskets 30 Non Asbestos
Gasket Sheet Nitrile Binder
60 Carbon Fiber
Gasket Nitrite Binder
70 Homogenous
Pure Graphite Sheet
75 Flexible Pure
Graphite Sheet with 316 SS Foil Insert
90 Asbestos
Gasket Sheet
95 Asbestos
Gasket Sheet with Wire Insert
Colour Yellow Grey Black Black Graphite Blue Blue
Type Kevlar Carbon Graphite Sheet Graphite with Wire Asbestos Asbestos with Wire
Thickness 1/32"
1/16"
1/8"
1/32"
1/16"
1/8"
1/32"
1/16"
1/8"
 
1/16"
1/8"
1/32"
1/16"
1/8"
 
1/16"
1/8"
Sheet Size 1.5mx1.5m 1.5mx1.5m 1.5mx1.5m 1.5mx1.5m 1.5mx1.5m 1.5mx1.5m
Binder Nitrite Nitrite None None None SBR Nitrite
Temperature 382ºC (720ºF) +482ºC (900ºF) 500ºC (932ºF) in air;
650ºC (1,200ºF) in steam;
3,000ºC (5432ºF) in reducing
or inert media
"500ºC (932ºF) in air;
650ºC (1,200ºF) in steam;
3,000ºC (5432ºF) in reducing
or inert media
400ºC (752ºF) 540ºC (1000ºF)
Pressure, Max. 1,100 psi 2,200 psi 2,000 psi 2,000 psi 125 bar
(1,800 psi)
205 bar
(3,000 psi)
pH - - 0-14 (except strong oxidizers) 0-14 (except strong oxidizers) - -
Equivalent Garlock Code 3000 9800 / 9850 3125 3125SS / TC 900 1000

Seals General Information

A seal is any object that is placed between two surfaces to prevent leakage. There are two basic type of industrial seals.

  • Gaskets : A gasket is used between two stationary objects
  • Packings : A packing is used between two moving objects
  • Gaskets

    What is a Gasket?

    A gasket is any deformable material that is used to create a static seal and maintain that seal under various operating conditions in a mechanical assembly.

    Proper Selection

    • Temperature
    • Application
    • Media
    • Pressure
    • Size

    Temperature

    • Maximum spikes
    • Thermal cycling
    • Continuous operating temperature (COT)
    • Minimum temperatures

    Application

    • Flange information
    • Bolting information
    • Clamping force available
    • Compressive stress on the gasket

    What is an Ideal Gasket

    • Shall be impervious to the fluid being handled
    • Must have sufficient chemical resistance to prevent impairment of its physical properties
    • Must not contaminate the system
    • Must not promote corrosion of the flanges with which it comes in contact
    • Must be capable of withstanding the required bolt pressure without crushing or undergoing excessive flow
    • Sufficiently deformable, able to distribute the applied pressure evenly over the surfaces, compensating for irregularities
    • Must be elastic enough to maintain an adequate portion of the applied load in the face of joint movement
    • Must develop sufficient friction in contact with the flange surface to resist excessive creep or extrusion
    • Must lend itself to easy installation and removal

    Guidelines for Good Gasket Installation

    • Check surface finish and flatness.
    • Center the gasket on the flange.
    • Tighten bolts to compress gasket uniformly. This means use a crossing pattern and tighten in multiple steps.
    • Use a torque wrench, well-lubricated fasteners and hardened flat washers to ensure efficient bolt loading.
    • If possible, retorque 12 to 24 hours after the initial installation.
    • Never use grease-based anti-sticks or caulking compounds with the gaskets. Premature failure could occur as a result.

    How Do I Choose My Gasket

    • Material Compatibility
    • Temperature and Pressure Resistance
    • Minimize Torque Loss
    • Price
    • Ask Your Friendly Gapura Raya Representative

    Shopping: What is Available Out There

    • Rubber 200 - 400 deg F
    • Asbestos 800 deg F
    • Teflon 500 deg F
    • Aramid 700 deg F
    • Carbon 900 deg F
    • Graphite 1200 deg F

    Flex - Metallic Gaskets

    • Spiral Wound Gaskets
    • Bonnet Gaskets
    • Ring Joint Gaskets
    • Metal Jacketed Gaskets (HE)
    • Serrated Gaskets
    • Kammprofiles
    • Metallic O-rings*

    What is a Spiral Wound Gasket (SWG)

    • Alternately winding strips of metal and soft gasket filler
    • Reinforced by either an inner ring, an outer ring or both
    • CR > gasket with outer ring reinforcement
    • IR > gasket with inner ring reinforcement
    • CRI > gasket with inner & outer ring
    • BH > gasket without inner & outer ring

    Why Use SWG

    • More Complete Temperature Range - Cryogenic to +2000 deg F
    • Wider Pressure Range - Vacuum to standard 2500 psi flange rating
    • More Flexible / Resilient than any other Metal Gasket
    • Can Be Used Against Virtually Any Corrosive Media

    Merits of SWG Applications

    • Low Cost
    • Readily Available
    • Good Blow Out Resistance - High Pressure Rating
    • High Temperature Rating - Fire Safe
    • Time Proven

    Demerits of SWG Applications

    • Inventory Problem
    • High Bolt Load is Required to Effect a Seal
    • High Degree of Flange Parallelism is Required
    • Proper Flange Finish is Critical
    • Can Damage Flange Finishing
    • Large Sizes are Fragile
    • Recovery is Typically Low

    Where Do We Use SWG

    Power Plant
    • Steam Feed Water Pipe
    • Feed Water Heater
    • Valve Bonnets
    • Autoclaves
    Petrochemical
    • Catalytic Cracking Plant
    • Platformers
    • Heat Exchanger
    • Line Flanges
    • Valve Bodies
    Marine
    • Boilers
    • Economisers
    • Main Steam Line
    • Air Ejectors
    Nuclear Plants
    • Cooling Circuit Flanges
    • High Temperature Gas Lines
    • Pressure Vessels
    • Valves

    Critical Information

    • OD of the Outer Ring / Filler
    • ID of the Inner Ring / Filler
    • Thickness
    • Material (Ring, Filler and Winding)
    • Flange Rating
    • Flange Standard (ASME, JIS, ANSI, DIN)
    • Quantity

    Just In Case

    • A leaking gasket should not be merely replaced without questioning why it leaked
    • Save yourself future trouble by learning why a gasket leaks
    • Remove the gasket carefully and save it
    • Call your Gapura Raya representative who will check for possible clues to why the gasket leaked
    • Proper installation is key to gasket performance
    • Use thinnest gasket possible
    • Select right gasket for the job
    • PT. Gapura Raya can help install and maintain your gaskets
    • PT. Gapura Raya can trouble shoot why a gasket leaked
    • Choosing the right gasket will decrease down time, labor cost, fluid lost and product cost - let PT. Gapura Raya help you choose the right gasket