{"id":34105,"date":"2025-11-17T11:55:47","date_gmt":"2025-11-17T10:55:47","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&#038;p=34105"},"modified":"2026-08-25T15:11:40","modified_gmt":"2026-08-25T13:11:40","slug":"william-optics-90mm-tube-rings","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/william-optics-90mm-buisringen\/","title":{"rendered":"William Optics 90mm Tube Rings\u00a0"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\"><strong>William Optics 90mm Tube Rings: clamps each 90 mm tube without scratching<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These William Optics tube rings clamp tubes with a diameter of 90 mm securely and without scratches: the inside is lined with felt and the quick-release fastener with Teflon washer opens and closes with one movement, without tools.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Two M6 mounting screws per ring secure the assembly to a dovetail or plate. This allows you to quickly swap your tube between setups without constantly searching for screws.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-90mm-Buisringen-2.jpg\" alt=\"William Optics 90 mm felt-lined tube rings\" title=\"\"><\/figure><figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.telescoop.nl\/wp-content\/uploads\/2025\/11\/William-Optics-90mm-Buisringen-1.jpg\" alt=\"William Optics 90 mm felt-lined tube rings\" title=\"\"><\/figure><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">For which tubes<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Made for William Optics tubes with a 90 mm diameter; for other brands, measure the outer diameter of your tube before ordering.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Featured accessories<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mount the rings on the William Optics 290 mm Vixen dovetail or a Swan series Losmandy rail.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">For whom yes and for whom no<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>\u2713 Owners of a 90 mm tube who want to change quickly and scratch-free<\/li><li>\u2717 Owners of other pipe diameters: choose the appropriate ring size<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Content<\/strong><\/td><td>binder rings<\/td><\/tr><tr><td><strong>Inside diameter<\/strong><\/td><td>90 mm<\/td><\/tr><tr><td><strong>Lining<\/strong><\/td><td>Game<\/td><\/tr><tr><td><strong>Closing<\/strong><\/td><td>Quick-release fastener with Teflon washer<\/td><\/tr><tr><td><strong>Attachment<\/strong><\/td><td>2x M6 per ring<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">You can find more accessories for this brand at the <a href=\"\/en\/brands\/william-optics\/\">William Optics brand page<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>William Optics 90 mm tube rings: set of two aluminum rings with felt lining, quick-release fastener with Teflon washer and M6 mounting. Scratch-free, sturdy mounting.<\/p>","protected":false},"featured_media":97529,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[643],"product_cat":[3126,590,538,56],"product_tag":[],"class_list":["post-34105","product","type-product","status-publish","has-post-thumbnail","product_brand-william-optics","product_cat-buisringen-en-telescoopringen","product_cat-montering-accessoires","product_cat-monteringen","product_cat-telescoop-accessoires","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[34140],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":111636,"url":"https:\/\/www.telescoop.nl\/en\/zwo-seestar-s50-pro\/","url_meta":{"origin":34105,"position":0},"title":"ZWO Seestar S50 Pro","author":"Info telescoop","date":"25-08-2026","format":false,"excerpt":"The ZWO Seestar S50 Pro is the successor to the Seestar S50: 50 mm quadruplet APO (260 mm, f\/5.2), two 8.3 MP 4K sensors, a 63-degree wide-angle camera for the Milky Way up to 8K, three built-in filters, a 10,000 mAh battery (up to 9 hours), and 128 GB of storage. 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