Save time and standardize the activities in equipment preparation for sterilization. Manufactured and packaged in a controlled cleanroom environment Reduces labor costs Simplifies the conformance to wrapping SOP's Autoclavable up to 135 °C Tear and puncture resistant Significant process improvement compared to wrapping with BioShield paper Conveniently packaged-100 per sealed poly bag Save time and standardize the activities in equipment preparation for sterilization. BHD Muffs provide a convenient means to cover flasks, beakers, containers, media bottles, valves, pipes and hoses. These closures are breathable and can be used to prevent particulates and microbial contamination from entering openings of any size. Since they are autoclavable, they can be used during sterilization to reduce time consuming wrapping of open containers. Each closure incorporates latex-free rubber elastic to create a positive seal around round shaped openings. Certificates of conformance sent with each shipment.