Specification Brand : Outgeek BulletPoint1 : Usage: Rubber gasket set is installed on the watch back case, can cover the gap between the watch band and movement BulletPoint2 : Material: Quality rubber seal washers are non-toxic and safe to use BulletPoint3 : Dimensions: Single Thickness: 0.05cm(0.06in) BulletPoint4 : Note: Except seal ring, other things on picture are not included BulletPoint5 : International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Color : Black ExteriorFinish : Rubber ExternallyAssignedProductIdentifier : 5060331011965 ExternallyAssignedProductIdentifier1 : 192751416343 ExternallyAssignedProductIdentifier2 : 0192751416343 GpsrSafetyAttestation : 1 ItemName : Outgeek Metric O-Ring Kit Rubber Washer Seals Assortment Set 950PCS Watch Back Gasket Waterproof Simple Seal Washers Set Rubber Seal Washers (0.5MM (12MM-30MM)) ItemPackageDimensions_Height : 19.4056 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 13.589 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : flat-washers Manufacturer : Outgeek Material : Rubber MetalType : Stainless Steel ModelNumber : 4F17X18A42S2D3 NumberOfPieces : 950 PartNumber : 4F17X18A42S2D3 ProductDescription : SUB2000 Buffer Washer is made of high-grade polyurethane rubber. Our polyurethane rubber has great tensile strength of 4400 psi to assure durability and longevity. Made in USA. ProductSiteLaunchDate : 2020-12-10T03:22:51.941Z Size : 0.5MM (12MM-30MM) Style : Stainless Steel SupplierDeclaredDgHzRegulation : not_applicable TemperatureRange : 37 degrees_celsius UnitCount : 950 UnspscCode : 31400000 WasherType : Flat