I was wondering if anyone knew of a Flame Retardant hairnet supplier.

Salisbury makes both hair and beard nets which have an ATPV rating of 2.4cal/cm^2.

Many different manufactures offer Arc Rated Hair and Beard Nets. Another example is Oberon, see attached. Oberon uses 100% Nomex Jersey Knit with encapsulated elastic band, the arc rating is 2.7 cal/cm2 and the fabric only weighs 1.75oz. I have experience selling Arc Rated Hairnets and the most important consideration for the workers who wear them is "how hot are they?". Light weight 100% Nomex Jersey Knit is the most comfortable option in my opinion.

Tips: make sure you buy hair/beard nets that are launderable! I even suggest using a mesh laundry bag to help extend the life of these products (laundering machines can be rough on light weight jersey knit). Most of my customers realize at least 3-6 months wear life with Oberon hair nets when they use them daily and launder them frequently.

Pricing (Oberon MSRP in US dollars, FOB Factory)
20" Hairnet $14/EA
24" Hairnet $16/EA
Beardnet $16/EA

Hmm, should I go there Jim????

Feel free! Everyone else is using this board to sell their products or advertise their company so I thought what the hell.

Actually quite a bit gets deleted or edited that many probably never see. There are still a lot of promo posts out here but the "spam / advertising police" are starting to go though it and delete / edit some of it since more and more are pushing the line.