Tyvek Envelopes Residents and businesses can recycle Tyvek mailing envelopes through specialized companies. CFS RECYCLING 337A Industrial Drive Petersburg, VA 23803 () - Recycling through DuPont; Quantities less than 25 envelopes call (804) 518-2930. Quantities larger than 25 envelopes call (800) 448-9835. DuPont 337A Industrial Drive Petersburg, VA 23803 (800) 448-9835 Recycles Tyvek envelopes and suits plus any Tyvek brand wear that is not contaminated with chemicals.