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COMPRESSED ARAMID & PHENOLIC FIBER SHEET

Durlon Compressed Aramid & Phenolic Fiber

Durlon GasketsDurlon Gaskets
7900 & 79508400
Economical Solutions
Durlon 7900 (off white) and 7950 (blue) are our economy grade aramid fiber and NBR general-purpose gasketing materials specifically engineered to deliver unsurpassed sealability, temperature resistance and bolt torque retention when service ranges and applications are not severe.
Premium Solutions
Durlon 8400 (gold) is our patented phenolic / NBR next generation material that provides the widest range of chemical resistance of any compressed non-asbestos material available today. It's designed for high pH applications in the demanding services found in the pulp & paper, chemical processing and power generation industries where traditional compressed gasket materials have fallen short.
Service & Cost Savings
  • Unsurpassed sealability drastically lowers emission levels.
  • General purpose sheet outperforms traditional economy sheets.
  • Anti-stick coating reduces time spent removing.
  • Good compressibility and recovery maintains tight seal.
Benefits:
Temperature & Chemical Resistance

  • Our patented ingredients and manufacturing methodology results in superior sealing in a wide range of difficult chemical services.
  • Perfect for OEM applications such as pump casings, valves and filters.
Convenience and Quality
  • Cuts easily and cleanly.
  • Consistency of ingredients provides improved handling.
  • ISO 9001 Quality Standards.
  • Minimal wear on tooling.
Perfect for Flange Insulation Kits
  • Unsurpassed dielectric breakdown and volume resistivity.
  • Excellent torque retention to maintain cathodic protection.

Durlon Compressed Aramid Fiber

Durlon GasketsDurlon Gaskets
85008600 & 8700
Premium Solutions
Durlon 8500 (green) our general-purpose "workhorse" material contains our unique blend of high strength aramid and inorganic fibers providing excellent results in steam, hydrocarbons, and new generation refrigerants. Durlon 8500 passed a modified API 607 fire test at an independent laboratory and has proven to be reliable in situations where temperature and pressure cycling causes failures of lesser quality materials.
Benefits
Versatility

  • Our very best general purpose premium gasket material.

Thermal Strength
  • Our unique fiber matrix provides superior sealing in cyclical applications including steam and hot oils.
  • Passed the modified 607 Fire Test at an independent laboratory.

HVAC OEM Service Proven
  • Durlon 8500 has passed HVAC service fitness and compatibility tests for most of the next generation refrigerants and lubricants.
Premium Solutions
Durlon 8600 (white) is an outstanding gasket material containing our unique blend of high strength aramid and inorganic fibers providing excellent sealability in steam, condensate and dilute acids and where a "white" gasket material or an SBR binder is required.
 
Benefits
Thermal Strength

  • Our unique fiber matrix provides superior sealing in cyclical applications.

 
Durlon 8700
 
Premium Solutions
Durlon 8700 (blue) is our premium neoprene (CR) gasket sheet combined with our unique blend of high strength aramid and inorganic fibers providing excellent sealability in services such as ammonia containing refrigerant systems.
 
Benefits
  • Our top performer for old style HVAC OEM applications.
  • Proven to provide a tight seal in refrigerants, oils and fuels.

Typical Physical Properties

DURLON Style84008500860087007900 / 7950
ColorGoldGreenWhiteBlue7900 - Off-White
7950 - Blue
Fluid ServicesSteam, Oils, Fuels, Solvents, Caustics, Refrigerants, Dilute Acids & AlkalisSaturated Steam, Oils, Dilute Acids & Alkalis, Solvents, Fuels, RefrigerantsSaturated Steam, Water, Dilute Acids & Alkalis, Inert Gases, AmmoniaSaturated Steam, Oils, Water, Dilute Acids & Alkalis, RefrigerantsSteam, Water, Inert Gases, Oils, Fuels, Dilute Acids & Alkalis
Fiber SystemPhenolicAramid / InorganicAramid / InorganicAramid / InorganicAramid
BinderNBRNBRSBRCRNBR
Density (lbs. / Cu. Ft.)106106106106106
Temperature Max.
Continuous
-100 to 800ºF
554ºF
-100 to 700ºF
548ºF
-100 to 700ºF
548ºF
-100 to 700ºF
548ºF
-100 to 700ºF
400ºF
Pressure Max.1500 psig1500 psig1500 psig1500 psig1000 psig
Compressibility
ASTM F36
8-16%8-16%8-16%8-16%7-17%
Recovery
ASTM F36
50%50%45%45%40%
Creep Relaxation
ASTM F38
25%20%20%20%20%
Tensile Strength Across Grain
ASTM F152
1800 psi2000 psi1800 psi1500 psi1600 psi
Fluid Resistance
pH Range (Ambient)
2-133-113-113-113-11
ASTM F146 - IRM 903 Oil, 5 hours @ 300ºF
Thickness Increase0 to 15%0 to 15%15 to 30%0 to 15%0 to 15%
Weight Increase15%15%30%15%15%
ASTM F146 - ASTM Fuel B, 5 hours @ 70ºF
Thickness Increase0 to 10%0 to 10%5 to 20%0 to 15%0 to 10%
Weight Increase15% Max10% Max30% Max15% Max12% Max

Leachable Halides1000 ppm max.1000 ppm max.---
Leachable Chlorides400 ppm max.100 ppm max.---
Leakage: DIN 35350.03 cc/min.0.03 cc/min.0.05 cc/min.0.05 cc/min.0.05 cc/min.
Volume Resistivity
ASTM D257, 1/16"
3.1 x 1013 ohm-cm4.2 x 1013 ohm-cm4.2 x 1013 ohm-cm4.2 x 1013 ohm-cm-
Dielectric Breakdown
ASTM D149, 1/16"
14.6 kv/mm11.7 kv/mm11.7 kv/mm11.7 kv/mm-
Gasket Factors
Gb psi, 1/16"
a, 1/16"
Gs psi, 1/16"
 
2000
0.36
0.13
 
650
0.33
200
---
Flexibility
ASTM F147
8x10x8x8x10x
Line Call-Out
ASTM F104
F712120-B4E22M5F712120-B3E12M6F712440-B3E24M5F712330-B5E45M5F712120-B3E22M4
Note: ASTM and DIN properties based on 1/16" sheet thickness, except ASTM F38, which is based on 1/32" sheet thickness. This is a general guide only and should not be the sole means of accepting or rejecting this material. The data listed here falls within the normal range of product properties, but should not be used to establish specification limits nor used alone as the basis of design.
Warning: These materials should never be recommended when both temperature and pressure are at the maximum listed. Properties and applications shown are typical. No application should be undertaken by anyone without independent study and evaluation for suitability. Never use more than one gasket in one flange joint, and never reuse a gasket. Improper use or gasket selection could cause property damage and / or serious personal injury. Data reported on this web page is a compilation of field testing, field service reports and / or in-house testing. While the utmost care has gone into publishing the information contained herein, we assume no responsibility for errors. Specifications and information contained on this web page are subject to change without notice.

For an explanation of Gb, a & Gs factors, torque info & gasket installation go to our Durlon Technical Info page.



Klinger Compressed Aramid Fiber

C4401 Gaskets

KLINGERsil C-4401

Characteristics

  • Synthetic Fiber
  • Nitrile Binder
  • Excellent Sealability
  • Excellent Chemical Resistance
  • Good Creep Relaxation
  • Good General Purpose Sheet

Note: See graphs for temperature and pressure limits. Typical values refer to 1/16" material unless otherwise specified.
Klingersil C-4401
Creep RelaxationASTM F38B (1/32")20%
SealabilityASTM F37A (1/32").25 ml/hr
Klinger Hot Compression TestThickness Decrease 73ºF10% Initial
Thickness Decrease 572ºF9% Additional
CompressibilityASTM F36J7-17%
RecoveryASTM F36J50% Minimum
Tensile StrengthASTM F152 Cross Grain2200 PSI Typical
Change in Tensile StrengthASTM F152 after immersion in ASTM Oil 3, 5h/300ºF25% Maximum Decrease
Weight IncreaseASTM F146 after immersion in Fuel B 5h/73ºF15% Maximum
Thickness Increase ASTM F146 after immersion in:ASTM Oil 1, 5h/300ºF0-5%
ASTM Oil 3, 5h/300ºF0-5%
ASTM Fuel A, 5h/73ºF0-5%
ASTM Fuel B, 5h/73ºF0-7%
SpecificationASTM F104 Line Call OutF712121B3E21M6
Leachable Chloride ContentF.S.A. Method (Typical)100 ppm
DensityPounds per Cubic Foot112
ColorTop/BottomGreen

Note: Klinger material with synthetic fiber is also available with a neoprene binder (C-5400), an SBR binder (C-6400), an EPDM binder (C-7400), a Hypalon® binder (C-8200), a nitrile binder with a wire insertion (C-4408), a carbon fiber with a nitrile binder (C-4500) and carbon fiber/nitrile binder with an expanded metal reinforcement (C-4509).

Pressure and Temperature Graphs

Material Thickness: 1/16"

C-4401 Liquids
4401
C-4401 Gases & Steam
4401b

About the Klinger Pressure & Temperature Graphs

The pressure/temperature charts shown for Klingersil compressed materials are the most current method of determining the suitability of a gasket material in a known environment. Use the pressure and temperature graphs to select the most suitable Klingersil material for your application.

{1} In area one, the gasket material is suitable using common installation practices subject to chemical compatibility.
{2} In area two, appropriate measures are necessary for installation of the gasket to insure maximum performance. Please call or refer to the Klinger-expert software system for assistance.

{3} In area three, DO NOT INSTALL GASKETS in these applications without first referring to the Klinger-expert software system or contacting Thermoseal Inc.'s technical support service.
These graphs were developed from testing Klinger materials. Do not use them for competitor's materials since non-asbestos gasketing materials do not have service equivalents.

For Torque Info for C-4401 Ring Gaskets Go To:
TORQUE VALUES FOR C-4401 RING GASKETS


Hypalon® is a registered trademark of DuPont Dow Elastomers

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Tampa Rubber & Gasket Co., Inc.

215 North 20th Street
Tampa, FL, USA 33605
Ph-813-247-3647 Fax-813-247-3180
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