{"product_id":"chemglass-m18-blind-stopper-for-bioreactor","title":"Chemglass M18 Blind Stopper for Bioreactor","description":"\u003ch3\u003eChemglass M18 Blind Plug Stopper for Bioreactor Head Plates - 316L Stainless Steel, Autoclavable (MPN: CLS-1380-25)\u003c\/h3\u003e\n\u003cp\u003eThe Chemglass CLS-1380-25 is a premium, precision-machined M18 threaded blind stopper designed specifically for sealing unused accessory ports on benchtop bioreactor head plates. Engineered as a like-for-like, drop-in replacement part for Applikon Biotechnology and Broadley-James brand bioreactor systems, this plug ensures a perfect, leak-proof closure for 1 to 15 liter culture vessels. Machined from ultra-durable 316L stainless steel, it provides exceptional resistance to chemical degradation and is completely safe for repeated high-temperature steam sterilization cycles. Threaded directly from the outside of the head plate, it securely caps M18 ports that are not actively holding sensors, addition pipes, or sampling tubes.\u003c\/p\u003e\n\u003ch3\u003eTechnical Performance and Design\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003e316L Stainless Steel Construction:\u003c\/b\u003e Manufactured entirely from heavy-duty 316L grade stainless steel, ensuring maximum durability against corrosive media, acidic buffers, and high-pressure steam environments without rusting or pitting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eElectropolished Surface Finish:\u003c\/b\u003e Features a high-purity electropolished surface finish of 20Ra or better. This ultra-smooth profile prevents bacterial biofilm accumulation, protein adhesion, and cross-contamination around the port threading.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eUniversal Brand Compatibility:\u003c\/b\u003e Precision-threaded to serve as a direct, seamless replacement component for industry-standard Applikon and Broadley-James bioreactor head plates, eliminating the need for expensive proprietary OEM stoppers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eAirtight O-Ring Sealing:\u003c\/b\u003e Designed to sit flush and compress an orange silicone O-ring against the head plate, establishing a hermetic, pressure-safe seal that defends the internal culture from ambient airborne contaminants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eCatalog Number \/ MPN:\u003c\/b\u003e CLS-1380-25\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eManufacturer \/ Brand:\u003c\/b\u003e Chemglass Life Sciences\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eThread Size:\u003c\/b\u003e M18 (Threaded from the outside of the port)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eMaterial Composition:\u003c\/b\u003e 316L Stainless Steel (Electropolished to 20Ra or better)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eSterilization Compatibility:\u003c\/b\u003e Fully Autoclave Safe\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eCompatible O-Ring Profile:\u003c\/b\u003e 20.0 x 2.00 mm (O-ring generally sold separately)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Benefits and Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eHead Plate Customization:\u003c\/b\u003e Allows technicians to securely block off large M18 ports when oversized sensors, addition pipes, or spargers are temporarily removed for specific microbial or mammalian cell culture runs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eSteam-in-Place (SIP) Durability:\u003c\/b\u003e Maintains structural integrity and thread tolerance even after hundreds of extreme-heat autoclave sterilization cycles, preventing dangerous pressure blowouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eBypassed Proprietary Costs:\u003c\/b\u003e Serves as a highly economical alternative to purchasing replacement plugs directly through original bioreactor manufacturers while matching exact technical specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eErgonomic Installation:\u003c\/b\u003e The top profile allows for secure, fast tightening and removal from the exterior of the head assembly, making setup and teardown highly efficient.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp style=\"margin: 0; font-size: 0.8em;\"\u003e\u003ci\u003eAll product names, logos, and brands are property of their respective owners.\u003c\/i\u003e\u003c\/p\u003e","brand":"Chemglass","offers":[{"title":"Default Title","offer_id":44497093034236,"sku":"3993","price":80.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8463\/5132\/files\/chemglass-g34-blind-stopper-for-bioreactor-bioreactors-fermenters-chemglass-275549.jpg?v=1766636665","url":"https:\/\/lifesciencestrading.com\/products\/chemglass-m18-blind-stopper-for-bioreactor","provider":"Life Sciences Trading","version":"1.0","type":"link"}