Key principles.
Standard food
316L 21 CFR 175. Food contact, dairy, beverage. Standard.
21 CFR 177
HDPE, PP, PETG, polycarbonate, nylon FDA-listed.
USP VI
USP Class VI silicone, nitrile rubber for food/medical contact.
3003 H14
Aluminum food contact. Some grades approved.
Ra 0.8 sanitary
Sanitary surface finish per 3-A Sanitary standard.
Drainable
Drainable design. No stagnant zones. Crevice-free.
FAQ
21 CFR 175 (adhesives), 177 (food contact materials), 178 (additives). Materials approved for direct food contact.
316L 2-3% Mo for chloride/acid resistance. Critical for processed food, dairy. 304 OK for many applications.
Ra 0.8 µm general food. Ra 0.4 µm dairy/pharmaceutical. Electropolished for biopharm.
3-A Sanitary covers food/dairy equipment design. Drainable, crevice-free, sanitary connections.
USP VI elastomer/plastic certified for medical implant. Higher than food contact. Acceptable for food.
Material certificates, FDA letter of compliance, surface finish documentation.
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