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Flamemaster CS-1900 Black MIL-S-38249 Type 1, Amend. 3 Spec Firewall Sealant - Pint (12 fl oz) Can Kit
Meets MIL-S-38249 Class-B CS 1900 is a compound for sealing firewall structures. It is elastomeric at operating temperatures from ΓÇÉ65 deg F to 400 deg F and able to withstand flash temperatures of 2000 deg F.
Application properties Color: Part A Black Part B Clear Amber Liquid
Base viscosity 10,000 - 12,000 poise
Consistency: Workable Paste
Work life Tack free cure to 35 A 2 hrs. < 4 hrs. < 60 hrs. Slump (flow) < 0.30
The Frekote 770-NC synthetic mold release I ordered has a 6-month shelf life from the factory. The can I received on 8/25 was set to expire on 8/31 according to the date printed on the bottom of the can. I called and sent a photo of the can bottom and they said it should have been taken off the shelf a month earlier, so they will send me a good can when new stock arrives without sending the out of date can back.
I appreciate the fast delivery and them taking care of the issue, but it means you could be buying product that has only one month of shelf life remaining. Call before you buy and have them confirm the expiration date of their stock and if it is less than works for you, work out delivery from fresh stock or negotiate a discount.
