Drop-in-place seals offer easy installation and time-saving drop-in-place seals assembly, providing seal retention in straight-wall or dovetail grooves.

Gallagher and the Parker ISS Division design each drop-in-place seal with the application in mind, taking into consideration the material and manufacturing process of the mating surfaces to determine the most efficient design.

The drop-in-place design utilizes a rubber encapsulated plastic or metal backbone, lined with retention and stabilizer ribs. This design holds simple or complex seal shapes, easing installation and providing automation possibilities. Small contact points require less flange loading, providing maximum sealing under minimal pressure for non-ideal surfaces.

Product Features:

·   Injection molded controlled compression elastomer seal

·   Custom shapes, sizes and cross sections to meet applications

·   Plastic spines to assist with assembly

·   Integrates metal deflectors, screens or wire connections available

Benefits:

·   Cost effective

·   Easy installation

·   Can be shipped as part of an assembly

·   Long life in aggressive environments

 

Drop-in-Place Seal Materials
Polymer Material Selection and Compatibility Chart
Polyacrylate

(ACM)

Ethylene Acrylic

(AEM)

Hydrogenated Nitrile (HNBR) Silicone

(VMQ)

Fluorocarbon (FKM)
Compatible Fluids ATF

Petroleum Oils

ATF

Petroleum Oils

Petroleum Fluids

Water/Steam to 300°F

Ethylene Glycol

High Temperature Dry Heat

Low Temperature

High Analine Point Oils

Petroleum Fluids

Aromatic Hydrocarbons

Fuel

Non-Compatible

Fluids

Steam

Brake Fluids

Acids

Fuels

Brake Fluids

Phosphate Esters

Brake Fluids

Strong Acids

MeOH/EtOH Blends

Water/Steam > 250°F

Acids and Alkalis

Hydrocarbon Duels

Aromatic Hydrocarbons

Brake Fluids

Low Molecular Weight

Acids, Amines

Steam

Physical Properties of Drop-in-Place Elastomers
Material AA451-70 AE163-75

(0708)

KB161-70

(21377)

SW475-70 VW452-70

(6731)

Polymer Type ACM AEM HNBR VMQ FKM
Temperature Range -40 to 160°C -40 to 150°C -40 to 150°C -60 to 200°C -30 to 200°C
Original Properties Method
Specific Gravity, g/cc D297 1.29 1.28 1.19 1.57 1.98
Hardness, Shore “A” pts. D2240 67 73 72 66 72
Tensile, MPa D412 8.9 13.5 24.8 7.8 10.7
Elongation, % D412 209 222 196 175 192
100% Modulus, MPa D412 3.1 7.6 8.5 4.2 6.2
Tear Strength (Die C), kN/m D624 26.0 45.1 33.8 13.0 31.7
Compression Set – 70 hrs @ 150°C (Plied Disc)
% Deflection D395

Method B

21.3 24.0 15.1 22.0 14.4
ASTM #1 Oil – 70 hrs @ 150°C
Hardness Change, pts. D471 +5 -1 +1 -3 -1
Tensile Change, % D471 -4.4 +8.9 -8.6 -15.7 +15.0
Elongation Change, % D471 -3.2 -5.2 -11.2 -16.4 +13.4
Volume Change, % D471 -3.5 -1.6 -1.4 +2.8 +1.2
IRM - 903 Oil – 70 hrs @ 150°C
Hardness Change, pts. D471 -14 -15 -4 -14 0
Tensile Change, % D471 -13.1 -27.9 -23.4 -25.9 -4.8
Elongation Change, % D471 -4.2 -11.3 -8.2 -15.3 -1.6
Volume Change, % D471 +23.6 +39.0 +12.0 +33.1 +2.8
Low Temperature Transition
TR-10, °C D1329 -30.5 -28.4 -21.1 -53.0 -15.2