Sec. 494.5. Exemptions

The following table lists exemptions to the prohibitions listed in section 494.4 of this Part.

(a) Table of acceptable uses.

End-Use Category	Prohibited Substances	Acceptable Uses
(1) Aerosol Propellants	HFC-134a	Cleaning products for removal of grease, flux and other soils from electrical equipment; refrigerant flushes; products for sensitivity testing of smoke detectors; lubricants and freeze sprays for electrical equipment or electronics; sprays for aircraft maintenance; sprays containing corrosion preventive compounds used in the maintenance of aircraft, electrical equipment or electronics, or military equipment; pesticides for use near electrical wires, in aircraft, in total release insecticide foggers, or in certified organic use pesticides; mold release agents and mold cleaners; lubricants and cleaners for spinnerettes for synthetic fabrics; duster sprays specifically for removal of dust from photographic negatives, semiconductor chips, specimens under electron microscopes, and energized electrical equipment; adhesives and sealants in large canisters; document preservation sprays; FDA-approved Metered Dose Inhalers for medical purposes; wound care sprays; topical coolant sprays for pain relief; and products for removing bandage adhesives from skin.
(2) Aerosol Propellants	HFC-227ea and blends of HFC-227ea and HFC-134a	FDA-approved Metered Dose Inhalers for medical purposes.
(3) Air Conditioning	HFC-134a	Military marine vessels where reasonable efforts have been made to ascertain that other alternatives are not technically feasible due to performance or safety requirements.
(4) Air Conditioning	HFC-134a and R-404A	Human-rated spacecraft and related support equipment where reasonable efforts have been made to ascertain that other alternatives are not technically feasible due to performance or safety requirements.
(5) Foams - Except Rigid polyurethane (PU) spray foam	All substances in section 494.4 of this Part prohibited for the foam end-use category	Military applications where reasonable efforts have been made to ascertain that other alternatives are not technically feasible due to performance or safety requirements until January 1, 2022.
(6) Foams - Except Rigid polyurethane (PU) spray foam	All substances in section 494.4 of this Part prohibited for the foam end-use category	Space- and aeronautics-related applications where reasonable efforts have been made to ascertain that other alternatives are not technically feasible due to performance or safety requirements until January 1, 2025.
(7) Rigid polyurethane (PU) two-component spray foam	All substances in section 494.4 of this Part prohibited for the foam-end use category	Military or space- and aeronautics-related applications where reasonable efforts have been made to ascertain that other alternatives are not technically feasible due to performance or safety requirements until January 1, 2025.
(8) All End-Use Categories	Any substance prohibited from use in section 494.4 of this Part.	Residential use as defined in section 494.3 of this Part.