Image shown is representative and may differ from the actual product in size, proportions, and color shade
5.560 in
(141.22 mm)
10.000 in
(254.00 mm)
8
0.880 in
(22.35 mm)
8.500 in
(215.90 mm)
1/2"
FSIL Parker LM158-60 Full Face Gasket, Size: 150#-5"-FF-1/2"
Material: FSIL Parker LM158-60 Full Face Gasket
Size: 150#-5"-FF-1/2" Full Face Gasket
Part Number: LM158-60-150#-5"-FF-1/2"
Parker Seal® (Parker)
LM158-60
Fluorosilicone (FVMQ, FSIL)
60
Shore A
Color: Blue
Detailed Description
LM158-60-150#-5"-FF-1/2" is a Blue, 60 Shore A, Fluorosilicone (FVMQ, FSIL) Full Face Gasket made from Parker Seal® (Parker). It is a 60 durometer Fluorosilicone (FVMQ, FSIL). Parker Seal® (Parker) LM158-60 is manufactured with the following features & specifications: General Purpose Material. LM158-60-150#-5"-FF-1/2" is size 150#-5"-FF-1/2" Full Face Gasket also referred to as 5 (Pipe Size) x 141.22mm (ID) x 254mm (OD) x 8 (Bolt Qty) x 22.35mm (Bolt Dia.) x 215.9mm (Bolt Circle) x 1/2" (Thickness). LM158-60-150#-5"-FF-1/2" is a size 5, 150#-FF ASME Ring Gasket. Material: 60 Durometer FSIL Parker LM158-60 Full Face Gasket Size: 150#-5"-FF-1/2", 5 Pipe Size X 141.22mm ID X 254mm OD X 8 Bolt Qty X 22.350mm Bolt Dia. X 215.900mm Bolt Circle X 1/2" Thickness
| Technical Specification | Value |
|---|---|
| Compound Number | LM158-60 |
| Brand | Parker Seal® (Parker) |
| Material | Fluorosilicone (FVMQ, FSIL) |
| Color | Blue |
| Durometer | 60 Shore A Hardness |
| High Temperature | 177 °C / 351 °F |
| Low Temperature | -73 °C / -99 °F |
| Geometry Specifications | |
| Type | Full Face Gasket |
| Size | 150#-5"-FF-1/2" |
| Pipe Size | 5 |
| ID | 141.22 mm / 5.560 in |
| OD | 254.00 mm / 10.000 in |
| Bolt Qty | 8 |
| Bolt Dia. | 22.35 mm / 0.880 in |
| Bolt Circle | 215.90 mm / 8.500 in |
| Thickness | 1/2" |
Parker’s LM158-60 is a 60 Shore A blue fluorosilicone (FVMQ) compound engineered for aerospace and industrial sealing applications that require reliable fuel and solvent resistance across extreme temperature ranges. Designed for operation from approximately -100°F to 350°F, it maintains flexibility in cold environments while delivering stable sealing performance at elevated temperatures. This material offers strong compatibility with fuels and solvents commonly encountered in aerospace systems, along with good resistance to aging and environmental exposure. Its balanced durometer provides improved conformability compared to higher-hardness grades while retaining sufficient strength for dependable static and light dynamic sealing.
LM158-60 is manufactured to AMS-R-25988 Type I, Class I, Grade 60 and meets AMS 3325 requirements, supporting use in regulated aerospace fuel system applications. It is commonly used for O-rings and gaskets in aircraft components, fuel handling assemblies, and systems exposed to wide thermal cycling. This compound is selected when low-temperature elasticity, fuel compatibility, and aerospace specification compliance are critical. Canyon Components offers equivalent fluorosilicone materials designed to match the performance, temperature capability, and certification profile of Parker LM158-60.
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