{"product_id":"linkmetal-cnc-silicone-sealing-washer-5pcs-pack-co2-laser","title":"LinkMetal CNC Silicone Sealing Washer for CO₂ Laser Focus Lens \u0026 Reflector Mirror (5pcs\/pack)","description":"\u003ch2\u003eSilicone Sealing Washer for CO₂ Laser Focus Lens \u0026amp; Reflective Mirror\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHigh quality silicone sealing washers specially designed for CO₂ laser focus lenses and reflective mirrors.\u003c\/strong\u003e Installed between the optical element and the lens holder to provide reliable airtight sealing, prevent dust, fumes and contaminants from entering the laser head assembly, and significantly extend the service life of expensive optical components.\u003c\/p\u003e\n\u003cp\u003eThis complete product series includes 7 standard sizes, fully compatible with all mainstream CO₂ laser focus lenses and reflective mirrors. Each pack contains 5 pieces, convenient for daily replacement and maintenance.\u003c\/p\u003e\n\u003ch3\u003eKey Advantages of Our Silicone Sealing Washers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Temperature Resistant Silicone\u003c\/strong\u003e: Made from premium high temperature resistant silicone material. Stable performance from -40°C to 200°C, suitable for continuous laser working conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Sealing Effect\u003c\/strong\u003e: Good elasticity and compression resistance. Creates a tight airtight seal between the optical element and lens holder, preventing air leaks and dust ingress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Molded Dimensions\u003c\/strong\u003e: Precision molded to exact specifications. Perfect fit for all standard laser lens holders, ensuring proper alignment and sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e: Compatible with all mainstream CO₂ laser focus lenses, protective windows and reflective mirrors from all major brands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenient 5-Piece Packaging\u003c\/strong\u003e: 5 pieces per pack, ideal for daily replacement and maintenance. Always have spares on hand to minimize downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7 Standard Sizes Available\u003c\/strong\u003e: Complete range of inner diameters available, covering all common optical element diameters used in CO₂ laser systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation \u0026amp; Replacement\u003c\/strong\u003e: Simple to install and replace. No special tools required, can be replaced in seconds during routine maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible Equipment \u0026amp; Available Sizes\u003c\/h3\u003e\n\u003ch4\u003eCompatible Applications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCO₂ Laser Focus Lenses\u003c\/li\u003e\n\u003cli\u003eCO₂ Laser Reflective Mirrors\u003c\/li\u003e\n\u003cli\u003eCO₂ Laser Protective Windows\u003c\/li\u003e\n\u003cli\u003eCO₂ Laser Beam Combiners\u003c\/li\u003e\n\u003cli\u003eAll Standard Laser Lens Holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAvailable Sealing Washer Sizes (5pcs\/pack)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eD12mm\u003c\/strong\u003e: Inner diameter 12mm, for 12mm and 12.7mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD15mm\u003c\/strong\u003e: Inner diameter 15mm, for 15mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD18mm\u003c\/strong\u003e: Inner diameter 18mm, for 18mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD19mm\u003c\/strong\u003e: Inner diameter 19mm, for 19mm and 19.05mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD20mm\u003c\/strong\u003e: Inner diameter 20mm, for 20mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD25mm\u003c\/strong\u003e: Inner diameter 25mm, for 25mm optical elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD28mm\u003c\/strong\u003e: Inner diameter 28mm, for 28mm optical elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCustom Sizes Available\u003c\/strong\u003e: For custom inner diameters, outer diameters or thicknesses, please \u003ca style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\" href=\"https:\/\/www.linkmetalcnc.com\/pages\/contact\"\u003econtact our sales team\u003c\/a\u003e directly for personalized solutions.\u003c\/p\u003e\n\u003ch3\u003eDetailed Technical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #dee2e6; padding: 12px; text-align: left; font-weight: 600;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eLink Metal CNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCO₂ Laser Optical Sealing Washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eHigh Temperature Resistant Silicone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e50 Shore A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e-40°C to 200°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003ePackage Quantity\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e5 pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eAvailable Inner Diameters\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003e12mm, 15mm, 18mm, 19mm, 20mm, 25mm, 28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eFunction\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eSealing \u0026amp; Dust Prevention\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #dee2e6; padding: 12px;\"\u003eCO₂ Laser Focus Lenses, Reflective Mirrors, Protective Windows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5 x Selected Size Link Metal CNC Silicone Sealing Washers\u003c\/li\u003e\n\u003cli\u003e1 x Sealed Dust-proof Plastic Bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eAll silicone sealing washers from Link Metal CNC undergo strict dimensional inspection before delivery. We ensure precise dimensions, good elasticity and reliable sealing performance for all our products.\u003c\/p\u003e\n\u003cp\u003eWe maintain strict ISO 9001 quality control standards to ensure consistent and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why do I need sealing washers for my laser optics?\u003c\/strong\u003e\u003cbr\u003eA: Sealing washers create an airtight seal between the optical element and the lens holder. They prevent dust, fumes and cutting debris from entering the laser head assembly, which is the leading cause of premature optical component failure. A $2 sealing washer can protect a $200+ focusing lens from damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the sealing washer?\u003c\/strong\u003e\u003cbr\u003eA: Sealing washers should be replaced every time you replace an optical element (lens, mirror or window). They should also be replaced if they become cracked, deformed, brittle or lose their elasticity. Regular replacement ensures proper sealing and maximum protection for your optics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I install the sealing washer correctly?\u003c\/strong\u003e\u003cbr\u003eA: Place the sealing washer in the lens holder groove first, then place the optical element on top of the washer. Make sure the washer is properly seated and not twisted or folded. Tighten the retaining ring gently to compress the washer and create a tight seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse a sealing washer?\u003c\/strong\u003e\u003cbr\u003eA: While sealing washers can technically be reused, we recommend replacing them every time you service the laser head. Reused washers may lose their elasticity and sealing ability, allowing dust to enter and damage your expensive optics. The low cost of replacement makes this a worthwhile investment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I choose the correct size sealing washer?\u003c\/strong\u003e\u003cbr\u003eA: Choose a sealing washer with an inner diameter that matches the diameter of your optical element. For example, use a D20mm washer for a 20mm diameter lens. The outer diameter is designed to fit standard lens holders for that size optical element.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-12.jpg?v=1776847088\" alt=\"LinkMetal CNC Complete Silicone Sealing Washer Package\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-11.jpg?v=1776847088\" alt=\"LinkMetal CNC Complete Silicone Sealing Washer Package\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-10.jpg?v=1776847088\" alt=\"LinkMetal CNC Complete Silicone Sealing Washer Package\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-09.jpg?v=1776847088\" alt=\"LinkMetal CNC Complete Silicone Sealing Washer Package\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-02.jpg?v=1776847088\" alt=\"LinkMetal CNC All Sizes Silicone Sealing Washers for CO2 Laser Optics\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-03.jpg?v=1776847088\" alt=\"LinkMetal CNC High Temperature Resistant Silicone Washer Detail\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-01.jpg?v=1776847088\" alt=\"LinkMetal CNC Silicone Sealing Washer for CO₂ Laser Focus Lens \u0026amp; Reflector Mirror\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-05.jpg?v=1776847088\" alt=\"LinkMetal CNC Washer Installation on Reflective Mirror Holder\"\u003e\u003c\/p\u003e\n\u003cp style=\"margin-top: 30px; padding: 15px; background-color: #e3f2fd; border-radius: 4px;\"\u003eView our full range of \u003ca style=\"color: #1976d2 !important; text-decoration: none; font-weight: 500 !important;\" href=\"https:\/\/www.linkmetalcnc.com\/collections\/co2-optical-lenses\"\u003elaser cutting accessories\u003c\/a\u003e including CO₂ focus lenses, reflective mirrors, protective windows and more.\u003c\/p\u003e","brand":"LinkMetal CNC","offers":[{"title":"D12mm(5pcs\/pack)","offer_id":48142056620254,"sku":"LMCNC-WASHER-D12-5PCS","price":2.29,"currency_code":"USD","in_stock":true},{"title":"D15mm(5pcs\/pack)","offer_id":48142056653022,"sku":"LMCNC-WASHER-D15-5PCS","price":2.29,"currency_code":"USD","in_stock":true},{"title":"D18mm(5pcs\/pack)","offer_id":48142056685790,"sku":"LMCNC-WASHER-D18-5PCS","price":2.29,"currency_code":"USD","in_stock":true},{"title":"D19mm(5pcs\/pack)","offer_id":48142056718558,"sku":"LMCNC-WASHER-D19-5PCS","price":2.29,"currency_code":"USD","in_stock":true},{"title":"D20mm(5pcs\/pack)","offer_id":48142056751326,"sku":"LMCNC-WASHER-D20-5PCS","price":2.29,"currency_code":"USD","in_stock":true},{"title":"D25mm(5pcs\/pack)","offer_id":48142056784094,"sku":"LMCNC-WASHER-D25-5PCS","price":2.49,"currency_code":"USD","in_stock":true},{"title":"D28mm(5pcs\/pack)","offer_id":48142056816862,"sku":"LMCNC-WASHER-D28-5PCS","price":2.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/8858\/5950\/files\/linkmetal-cnc-silicone-sealing-washer-08.jpg?v=1776847088","url":"https:\/\/www.linkmetalcnc.com\/products\/linkmetal-cnc-silicone-sealing-washer-5pcs-pack-co2-laser","provider":"Link Metal CNC ","version":"1.0","type":"link"}