NGC Selection Table

The following selection table for Asbestos-free gasketing, is developed to meet specific service conditions.

A=Satisfactory B=Depends on operating conditions C=Unsatisfactory

MEDIA

* 1 Acids * 2 Alkalies * 3 Gases * 4 Oils * 5 Solvents

* 1

* 2

* 3

* 4

* 5

Product

Basic Composition

Style

Comments

Compressed Carbon Fiber

Carbon Fiber, NBR Binder

NA 1137

NA

B

C

B

C

A

B

C

A

C

B

A

C

B

B

A

Saturated Steam Petroleum Oils

Compressed Non-Asbestos

Synthetic Fiber, NBR Binder

NA 1125

NA

B

C

B

C

B

B

C

A

C

B

A

C

B

B

A

General Purpose

Compressed Non-Asbestos

Synthetic Fiber, NBR Binder

NA 1123

NA

B

C

B

C

B

C

C

C

C

C

C

C

C

B

B

General Purpose

Compressed Non-Asbestos

Synthetic Fiber, CR Binder

NA 300

NA

B

C

B

C

B

C

C

B

C

C

B

C

A

C

B

Excellent for Most Refrigerants

Compressed Non-Asbestos

Synthetic Fiber, EPDM Binder

NA 1900

NA

B

C

A

C

B

C

C

C

B

C

C

C

C

B

A

Ozone Resistance

PTFE Proprietary Process

PTFE Filled

Gylon 3500 Fawn

NA

A

B

C

C

A

A

C

A

A

A

A

A

A

B

A

Chemical Resistance

PTFE Proprietary Process

Expanded PTFE

Quimslex

NA

A

B

C

C

A

A

C

A

A

A

A

A

A

C

A

Chemical Resistance, High Compressibility

PTFE Proprietary Process

PTFE Filled

Gylon 3510 White

NA

A

B

A

A

A

A

C

A

A

A

A

A

A

B

A

Low Cold Flow, Chemical Resistance

PTFE

PTFE

PTFE 1140

NA

A

A

A

A

A

A

C

A

A

A

A

A

A

B

A

Chemical Resistance

Flexible Graphite

Graphite

Graphite 1308

NA

A

A

A

A

A

B

C

A

A

A

A

A

A

B

A

High Temperature

Homogeneous Rubber

Natural Rubber

Gum 1121

35

B

C

B

C

B

C

C

C

C

C

C

C

C

C

A

Tear and Abrasion Resistance

Homogeneous Rubber

SBR

SBR 1110

80

B

C

B

C

B

C

C

C

C

C

C

C

C

B

A

Red Rubber, General Service

Homogeneous Rubber

Neoprene (CR)

CR 1112

60

B

C

B

C

B

C

C

B

C

C

B

C

B

C

A

Neoprene General Service

Homogeneous Rubber

Nitrile (NBR)

NBR 1113

60

B

C

B

C

B

C

C

A

C

B

A

C

C

C

B

Petroleum Oils, Fuels, Nitrile, Buna-N

Homogeneous Rubber

EPDM

EPDM 1152

60

A

B

A

B

B

C

C

C

C

C

C

C

C

B

A

Ozone Resitance

Reinforced Rubber

SBR Rubber Cotton

SBR / CIR

80

B

C

B

C

A

C

C

C

C

C

C

C

C

B

A

Cotton Sheeting

Reinforced Neoprene

Neoprene (CR) Duck

CR / CIR

50

B

C

B

C

A

C

C

B

C

C

B

C

B

B

A

Heavy Cotton Resistance

Vegetable Fiber

Cellulose Fiber Cork, Glue, Glycerine

VF 1134

NA

C

C

C

C

B

C

C

A

C

B

B

C

C

C

C

Soft, Resilient, Non-Water

Vegetable Fiber

Cellulose Fiber Glue, Glycerine

VF 1135

NA

C

C

C

C

B

C

C

A

C

B

B

C

C

C

C

Firm, Non-Water

Silicone Rubber

Silicone

Silicone 1155

50

C

C

B

B

B

C

B

C

C

C

C

C

C

C

A

Good High & Low Temperatures

Viton Rubber

Flouroelastomer

Viton 1150

80

A

A

A

A

A

B

B

A

A

A

A

B

C

C

A

Good Head & Chemical Resistance

Note: Gylon is a register Trademark of Garlock. Quimslex is a registered trademark of Teadit. The information in this chart should only be used as a general guide to the selection of suitable material.