Heard about Boelube for years. Finally had a chance to try it on several projects. It definitely works well and better than anything else I have ever tried. Would recommend.
Got it for AR assembly and it is the cheapest way to get it.
PRC Desoto
(Backordered) Normally Available within 4–6 Days.
SKU:PR1425B1-2CF
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PRC - PR-1425 B1-2CF Polysulfide A/B Sealant Chromate Free - 6OZ KIT
PR-1425CF Class B is a fast curing, chrome free*, aircraft windshield and canopy sealant. It has a service temperature range from -65-F(-54-C) to 250-F (121-C), with intermittent excursions up to 275-F (135-C). This material is an aircraft transparency sealant and has excellent adhesion to properly prepared glass, polycarbonate, and acrylicsubstrates. This product is specifically formulated not to craze substrates. The cured sealant exhibits excellent resistance to UV and weather exposure.
PR-1425CF Class B is a fast curing, two-part, manganese dioxide cure polysulfide compound. The uncured material is a lowsag, thixotropic paste, suitable for application by extrusion gun or spatula. This sealant has excellent adhesion to common aircraft substrates, when correctly primed with PR-1861 adhesion promoter.

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Heard about Boelube for years. Finally had a chance to try it on several projects. It definitely works well and better than anything else I have ever tried. Would recommend.
Got it for AR assembly and it is the cheapest way to get it.