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Gasket Seal

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Rated up to 204ºC (260ºC Intermittent)
Fast Cure
Low Volatile
Controlled Dispensing
No mess
Single handed application direct from nozzle
Can be used vertically or horizontally in a continuous bead


Zylock PL050 Gasket Sealer is a Black RTV Silicone sealant of high performance that is low corrosivity and high temperature resistant.

Zylock® PL050 is a high performance one component moisture curing gasket sealant for high temperature applications over 200˚C. Replaces almost any cut gasket. Resists cracking, shrinkage and migration. Can be applied to dress paper or cork pre-cut shapes.

Ideal for use with auto /workshop fluids and gases. Zylock PL050 Gasket Sealant has good resistance to weathering, vibration, moisture, ozone and extreme temperatures. Fully cured PL050 can be used for extended periods at temperatures up to 204˚C. Bottle designed to give you all the contents, so no waste!

Type: Polysiloxane based compound, Acetoxy curing
Consistency: Non-Sag Paste
Specifi gravity: 1.02
Temperature Resistance: -40 to +204˚C Continuous
Physical Properties (cured product)
Measured on 3mm a day is the general rule for curing
Initial strength: 12 minutes
Final strength: 24 hours
Cured – Physical
ASTM D 676 Durometer Hardness, Shore A, points: 30
ASTM D 412 Tensile Strength, psi (MPa): 350
ASTM D 412 Elongation, % 500
ASTM D 746 Brittle Point, degrees -73˚C
ASTM D 2137A Volume Coeffiient of Thermal Expansion, (0˚C 100˚C) 9.3 X 10-4
Thermal Conductivity, cal/(cm) (degree C): 0.45 X 10-3
BTU per (ft) (degrees F) (hr): 0.11
Cured – Electrical
ASTM D 257 Volume Resistivity, ohm-cm 1.5 X 1015
ASTM D 149 Dielectric Strength, **volts/mil 550
Statics Shear (oiled fim) 21-24 N/mm(2) (ISO/MIL)
ASTM D 150 Dielectric Constant
At 60 Hz 2.8
At 100 Hz 2.8
At 100 kHz 2.8
ASTM D 150 Dissipation Factor
At 60 Hz 0.0015
At 100 Hz 0.0015
At 100 kHz 0.0015

Method of Use

This solution is ready for use. Simply pull off the grey cap. Take off the nib of the spout using a sharp knife. Then tilt the bottle downwards, and gently press the trigger on the side of the bottle, and you should begin to see the black liquid; the professional Zylock Gasket Sealant is ready for use.