B'laster Industrial Strength Silicone Lubricant (11 oz aerosol)

Safe for brief and normal-use contact with EPDM and neoprene rubber seals — no documented rubber degradation appears in Amazon community reviews across roughly 6,000 ratings. The catch: the carrier is petroleum-based (an isoparaffinic C9-11 fraction plus a hydrotreated light petroleum distillate, per SDS §3), not pure silicone oil, so surface_safety is held conservatively at 6/10. Prolonged or soaking contact with rubber is not the intended use. For a higher surface_safety score, look for a silicone spray whose SDS Section 3 shows only the silicone active and propellant — no petroleum-distillate carrier.

The DANGER signal word is driven by three classifications in SDS §2: an aspiration hazard (the liquid may be fatal if swallowed and enters the airways), a flammable-aerosol physical hazard, and a pressurized-container physical hazard. The aspiration classification is specifically about the swallowing route — light petroleum-distillate liquid entering the lungs during vomiting can cause chemical pneumonitis. The flammable-aerosol and pressurized-container codes address fire and pressure risk, which is why the can warns against open flames and storage above 120°F. SDS §11 lists no acute toxicity, no skin or eye irritation, no sensitization, and no carcinogenicity, mutagenicity, or reproductive toxicity classifications — the DANGER label is not telling you the spray is biologically toxic in normal use; it is telling you not to ingest it and to keep it away from ignition sources.

Yes — the Amazon listing carries the California Prop 65 warning. The 2020-10-20 SDS §15.3 lists no state regulatory entries (the table is silent rather than disavowed), but the Amazon listing-level compliance scanner flags the product, and that is the authoritative buyer-facing source. The hydrotreated light petroleum distillate in §3 commonly carries trace impurities — benzene, naphthalene, ethylbenzene, toluene, and similar aromatics — at concentrations below the §3 ingredient-disclosure threshold but at levels that trigger the mandatory California Prop 65 label at retail. This is a common pattern for petroleum-carrier aerosol products.

No. Keep silicone spray off all painted panels, primer, and any surface that may need touch-up paint or body-panel adhesive bonding. Silicone residue is very difficult to fully degrease and prevents paint and primer from adhering — a known issue in body-shop work. Apply only to rubber seals, plastic trim, weatherstripping, window tracks, and hinge pivots — and mask or shield adjacent paint when spraying near body panels.

Both are aerosol silicone sprays built on a petroleum-distillate carrier, so the core chemistry stories are similar — the aspiration-hazard DANGER label, the California Prop 65 warning, and the high-VOC profile are all common to petroleum-carrier aerosol silicone in this category. The B'laster formula declares a simpler ingredient list in SDS §3 (two petroleum fractions plus CO₂ as propellant), with no acetone or heptane co-solvents. CRC's typical formula adds acetone and heptane fractions, which broadens the flammability and inhalation profile. Neither is a pure-silicone-oil formula — for that, look for a silicone spray whose SDS Section 3 lists only the silicone active and a propellant.