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Seals Eastern, Inc.
Seals, Gaskets, Packer Elements, and O-rings
for Sour Gas, H2S, and amine corrosion inhibitors.


134 PEARL STREET
RED BANK, NJ 07701-0520 USA
TEL: 732 747 9200  FAX: 732 747 3647

Rubber o-rings, orings, rubber seals, packer elements, gaskets, and rubber bonded to metal for sealing applications para Espanol Para portugues para Espanol

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Sour Gas, Hydrogen Sulfide ( H2S ) as well as amine inhibitors used to mitigate corrosion have been successfully sealed using 7182 brand Aflas since 1980.

Seals Eastern's 7182 brand formulated Aflas provides outstanding resistance to sour gas, as well as high concentrations of hydrogen sulfide, also known as H2S, a deadly poisonous gas found during oil and gas production. Whereas most rubber seals will experience excessive hardening and subsequent failure in low concentrations (ppm) of hydrogen sulfide, 7182 brand Aflas exhibits outstanding resistance to concentrations of in excess of 60%. The following data compiled by MERL Ltd, a third party testing lab, illustrates the robustness of 7182 brand Aflas in high concentrations of H2S, even at elevated temperatures (200C). Seals Eastern's 7182 brand Aflas is likewise resistant to amine corrosion inhibitors typically used to mitigate corrosion attributable to hydrogen sulfide.

7182B (90 Shore-A) formulated Aflas:
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
Baseline 12.7 MPa NA 19.9 MPa NA 20.8 MPa NA 109% NA
  - aged in 16% H2S @ 150C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 12.1 MPa -5% 17.9 MPa -11% 20.9 MPa 0% 124 % +12%
  - aged in 64% H2S @ 150C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 9.6 MPa -32% 13.6 MPa -46% 16.6 MPa -25% 133% +18%
  - aged in 16% H2S @ 200C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 11.0 MPa -15% 15.2 MPa -31% 18.7 MPa -11% 13% +19%
  - aged in 64% H2S @ 200C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
8.4 days 12.1 MPa -5% 17.9 MPa -11% 20.9 MPa 0% 124% +12%

7182D (80 Shore-A) formulated Aflas
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
Baseline 6.1 MPa NA 11.1 MPa NA 21.6 MPa NA 198% NA
  - aged in 16% H2S @ 150C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 5.4 MPa -13% 9.8 MPa -13% 18.9 MPa -14% 198 % 0%
  - aged in 64% H2S @ 150C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 3.8 MPa -61% 7.3 MPa -52% 18.8 MPa -15% 247% +20%
  - aged in 16% H2S @ 200C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
7.7 days 5.1 MPa -20% 9.4 MPa -18% 22.7 MPa -5% 250% 21%
  - aged in 64% H2S @ 200C
Time (days) 50% Modulus % Chg 100 % Modulus % Chg Tensile % Chg Elongation % Chg
8.4 days 4.4 MPa -39% 8.0 MPa -39% 20.2 MPa -7% 264% 25%

Seals Easterns 7182 series of formulated Aflas seals have set industry standards for the highest level of Aflas performance in oilfield, chemical processing, and steam applications.
Ref# Duro Description
7182D 80 General high temperature chemical resistant service.
7182B 90 High temperature, high pressure service. ED resistant. 
7182A 95 High temperature, high pressure service. ED resistant. 
7182X 80 Ultra-low compression set for use in aqueous and non-aqueous fluids.

Technical Papers Available
Elastomers in the Hot Sour Gas Environment
Sour Hydrocarbons - The Elastomer Challenge
Sealing High Pressures under Sour Conditions

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FastDash is a trademark of Seals Eastern, Inc.; OringOnline is a registered trademark of Seals Eastern, Inc.; 7182 is a trademark of Seals Eastern, Inc.; AFLAS is a registered trademark of Asahi Glass Co., Ltd.; Viton is a registered trademark of Dupont Performance Elastomers, LLC.