McKee's 37 Glass Coating (4 fl. oz.)

The label claims up to one year of protection on a single application. Community evidence is thin — only 10 Amazon reviews at a 3.5-star average — so the label claim is not corroborated by independent long-term tracking. Other ceramic-class glass coatings typically deliver 6–12 months on a daily driver. Treat the one-year claim as a manufacturer hypothesis until independent durability data accumulates.

Not at the time of writing. McKee's 37 does not publish safety data sheets on its own site, and a five-source check (manufacturer site, two distributors, an authenticated msdsdigital.com session, broad web search, and a sibling-SKU pattern check) turned up no SDS for the standalone 4 oz Glass Coating. For the actual SDS, the fastest path is contacting RME Enterprises (the brand's manufacturer) directly.

Manufacturer marketing describes it as a ceramic-class coating, which is consistent with SiO₂-family chemistry used across other McKee's 37 coatings (Hydro Pearl, Hydro Blue). Without an SDS Section 3 disclosure, the specific active ingredient and carrier solvent cannot be confirmed.

A score of 3.0 with the badge 'NO SDS' is the rubric default for any glass-coating product where the Safety Data Sheet cannot be located after the five-source exhaustion pass. It is a precautionary placeholder, not a measured hazard finding — it means the chemistry has not been verified. The score will be re-evaluated against confirmed GHS H-codes once the SDS is on file.

The Amazon listing is live but did not return a buy-box price at the time of writing — typically a stock-availability gap. The listing has not been marked discontinued by the manufacturer.