Precision Associates, Inc. - Minneapolis, MN
Manufacturer, Custom Manufacturer
Manufacturer of tight tolerance O-rings. Dimensions, durometer & other properties held to tight tolerances when specified. Visual inspection and automated measurement. USP VI, FDA, 3-A, UL & NSF listed compounds. Clean Room. In-house tool shop produces custom size molds & parts. Large inventory is available.
catalog.precisionassoc.com/asset/PAI%20Micr...

Tight Tolerance O-Rings Products
	O-Ring Cord Stock & Spliced O-Rings

Production Materials, Inc. - Wheeling, IL
Distributor, Service Company
ISO 9001:2000 certified distributor of custom parts including anchors, bolts, bushings, clamps, dowels, fasteners, gaskets, inserts, nuts, o-rings, pins, rods, screws, springs, stampings, studs & washers. Capabilities include engineering, bar coding/labeling, blanket order warehousing, bin stocking, packaging & kitting. Value added services such as hardness testing, polishing, burnishing, plating, patching, drilling, cut downs, grinding & passivation are available. Plating capabilities include black oxide, black PTFE, black chromate, brass, cadmium, Dacromet®, head painting, hot dip galvanized, phosphate & oil, polyseal, zinc & zinc yellow. JIT delivery.
www.productionmaterials.com/index.html

Ace Seal, LLC - San Jose, CA
Manufacturer, Custom Manufacturer, Service Company
Manufacturer of standard & custom high tolerance & tight tolerance O-rings. Materials used include Buna-N®, PTFE, Viton® (black & brown), neoprene, silicone, EPDM, urethane, Aflas®, encapsulated silicone & Viton® & perflouroelastomers (Kalrez®, Chemraz®, Simriz®). O-rings are available in hardnesses from 25 durometer to 95 durometer in cross-sections from 1/16 in. to 1/4 in., IDs from 1/32 in. to 26 in. & ODs from 3/32 in. to 26-1/2 in. O-rings are also available in metric & JIS specifications. QS 9000 & ISO 9002 approved.
www.aceseal.com/o-rings.html

Ames Rubber Manufacturing Company - Los Angeles, CA
Manufacturer, Custom Manufacturer, Service Company
Standard & custom sized molded O-rings. Precision tolerances.
amesindustrial.thomasnet.com/item/all-categ...

Arizona Sealing Devices, Inc. - Chandler, AZ
Manufacturer, Custom Manufacturer
Manufacturer of standard & custom high tolerance & tight tolerance O-rings. Types of O-rings include FDA approved O-rings, commercial & military O-rings & non-standard O-rings. Materials used include Buna-N, Viton®, ethylene propylene, silicone, fluorosilicone, Aflas®, butyl & polyurethane. Available in metric & standard sizes. O-rings can be customized as per ID, OD, cross section & thickness specifications.
www.azseal.com

Stock Drive Products / Sterling Instrument - SDP/SI - New Hyde Park, NY
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2000 & AS 9100B certified custom manufacturer of tight tolerance neoprene O-rings for use with lined linear bearings. Specifications of tight tolerance O-rings include 2 mm to 5 mm dia., 70 durometer hardness & minus 54 degrees C to plus 99 degrees C operating temperature.
www.sdp-si.com/web/html/hardware.htm

Grumen Manufacturing, Inc. - Gurnee, IL
Manufacturer, Custom Manufacturer
ISO 9001:2008 certified manufacturer of standard & custom high tolerance O-rings. Materials used include include plastics, rubbers & TPEs. Processes used include molding, splicing & extruding. O-rings in cross sections from 0.0031 in. to 8.000 in. can be fabricated. Stock O-rings in nominal IDs from 1/32 in. to 26 in. & nominal ODs from 3/32 in. to 26-3/8 in. are available. UL® listed & meet ASTM, FDA & NSF standards.
grumenmfg1.rtrk.com/?scid=1320788&rl_alt=ht...

ElastoSeal, Inc. - Lexington, KY
Manufacturer, Custom Manufacturer
Custom manufacturer of high & tight tolerance o-rings. Sealing devices include spliced, metric & molded o-rings, rubber washers & bushings, o-ring cord & rubber profile extrusions. Sealing standard compounds include Buna-N, Viton®, silicone, EPDM or EPR, neoprene & fluorosilicone. Sealing device sizes & compounds can be customized. Some materials used meet Military Spec., ASTM & FDA standards.
www.elastoseal.com/orings.html

Ponn Machine Cutting Co., Inc. - Woburn, MA
Manufacturer, Custom Manufacturer
Manufacturer of standard & custom tight tolerance O-rings. Various materials include butyl, EPDM, natural rubber, fluorocarbon, Hydrin®, neoprene, silicone, urethane & nitrile. Specifications include 1/32 in. to 26 in. nominal ID, 3/32 in. to 26-1/2 in. nominal OD & 1/32 in. to 2 in. cross section dia. Applications include medical devices & equipment, consumer products, appliances, prototypes, aviation & military.
www.ponnmachine.com/orings.html

Roeming Industries, Inc. - Mequon, WI
Distributor, Manufacturer, Custom Manufacturer, Service Company
Woman-owned manufacturer & distributor of high & tight tolerance O-rings. Types of O-rings include buna-N & Viton® O-rings. Available in metric & American sizes. Capabilities include designing, reverse engineering, prototyping, die cutting, rubber to metal bonding & sewing.
www.roeming.com/seals_packing.html

Sealing Devices Inc. - Lancaster, NY
Distributor, Manufacturer, Custom Manufacturer, Service Company
ISO 9001:2000 certified custom manufacturer & distributor of high temperature, tight tolerance, military specification, metric O-rings. O-rings are made from elastomers, hollow & solid metals, plastics & PTFE materials. Specifications of O-rings include nominal widths ranging from 1/32 in. to 1/16 in., nominal ID ranging from 1/32 in. to 5/16 in., nominal OD ranging from 3/32 in. to 7/16 in. & temperatures ranging from -100 degrees F to 600 degrees F. O-rings are suitable for sealing liquids, gases & solids. Meets AS568A, AMS, NAS standards & Mil-Specs.
Brand Names: Chomerics, GRAFOIL, Quad-Ring, SD, Simrit
www.sealingdevices.com/products/o-rings

Potter Associates - Rochester, NY
Distributor, Custom Manufacturer, Service Company
Custom manufacturer & distributor of high & tight tolerance O-rings. Types of O-rings include spliced & vulcanized O-rings, large dia. FDA approved material O-rings, aerospace & military specification approved O-rings, color-coding O-rings, replacement OEM O-rings & backup O-rings. Available in square, rectangular, quad style or custom shapes & different sizes. O-rings are made from different materials & compounds. O-rings are available in different kit packaging. Same day shipping available.
Brand Names: Dowty
www.potterassoc.com/custom-o-rings.html

T-Bird Group - Charleston, WV
Distributor, Manufacturer, Custom Manufacturer
Minority owned manufacturer & distributor of high pressure & high & tight tolerance O-rings. Types also include Buna-N® rubber quad, JIS, Buna-N®, EPR & urethane 70 durometer, Buna-N® 90 durometer, buna metric 90 durometer, Viton® 90 durometer, buna metric 70 durometer, Viton® 75 durometer & Buna-N® 70 durometer square O-rings.
Brand Names: Thunderbird Industries
products.thunderbirdindustries.com/category...

Lansco Manufacturing - Chagrin Falls, OH
Manufacturer, Custom Manufacturer, Service Company
Manufacturer O-rings. Includes high temperature & metric seals, ASTM, abrasion resistant, chemical resistant, custom, elastomeric, encapsulated, FDA approved, fluoroelastomer, fluorosilicone, high pressure, high temperature, high tolerance, hollow, hygienic, metric, microminiature, neoprene, nitrile, perfluoroelastomer, polyurethane, silicone, spliced, SBR, PTFE, vinyl, & Viton® O-rings.
www.lanscomfg.com/index.html

Coast Rubber & Gasket, Inc. - Burlington Township, NJ
Distributor, Manufacturer, Custom Manufacturer, Service Company
Manufacturer & distributor of rubber extrusions various types of gaskets including O-rings, packing, piston, sealing, plastic & rubber rings. Also supply rubber & rubber-covered rolls. Die cutting services also available.
www.coastrubberandgasket.com/products.html

Fluid Power Sealing - Mars, PA
Distributor, Custom Manufacturer, Service Company
Stocking distributor of all type JIS O-ring, AS568 & metric O-ring & backups, O-ring cord of all materials including Buna-N (nitrile), EPDM (ethylene propylene), fluoroelastomer (Viton®, fluorel) neoprene, silicone, urethane, PTFE based materials FEP & PFA encapsulated O-ring & quad rings. Also other materials which have acid, chemical & oil resistant properties.

Anderson Seal, Inc. - New Berlin, WI
Distributor, Service Company
Woman-owned ISO 9001:2008 certified distributor of high & tight tolerance O-rings. Available in materials including nitrile, EPDM, silicon, fluoroelastomer, fluorosilicone, PTFE, nylon & Viton®. O-rings are used in radial & face sealing applications. Capabilities include assembly kitting, color coding, coating, repairing & reverse engineering. On-site design engineering assistance & packaging services are available. Kanban & JIT delivery available.
www.andersonseal.com/products/o-rings-and-b...

Grainger Industrial Supply - Locations
Distributor
Distributor of custom o-rings in a variety of measures. Available o-ring shapes include round, rectangular & quattro. O-ring specifications include fractional widths ranging from 1/8 in. to 1 in., inside dia. ranging from 3/4 in. to 9 in. & a variety of outside dia. Materials used include Buna N, Viton, EPDM, silicone, Buna, PTFE, Hytrel, neoprene, FEP with silicone core, FEP with Viton core, glass filled nylon, polyurethane & Viton ETP. Available in a variety of colors, effective temperature ranges & durometer ratings. O-rings meet SAE J200 & ASTM D2000 standards. Services include 24-hour emergency order response services, inventory management services, safety services, repair and replacement programs, hazardous recycling services and storage/material handling equipment services. 1 year warranty.

Gates Corporation - Denver, CO
Manufacturer, Custom Manufacturer
Manufacturer a full line of O-rings, couplings & adapters for hydraulic or industrial transfer applications, including acid-chemical, air, water, food & beverage, oilfield, petroleum, material handling, pressure washer, steam, multi-purpose, marine & special applications.

Regional Rubber Co. - Lilburn, GA
Distributor, Manufacturer, Custom Manufacturer, Manufacturers' Rep
Manufacturer & distributor of standard & custom O-rings including metric O-rings & high & tight tolerance O-rings. Types include conductive O-rings, molded O-rings, extruded O-rings & spliced O-rings. Materials include natural rubber, neoprene, hypalon, masticated rubber, nitrile, cork/rubber blend, EPDM, urethane, Viton®, conductive silicone, silicone, white FDA nitrile, butyl, Kalrez® & SBR. Available in custom sizes, profiles & colors. Capabilities include die cutting, molding, extruding, splicing & hand fabrication. Materials meet ASTM & Military Specs.

Seal & Design, Inc. - Clarence, NY
Distributor, Manufacturer, Custom Manufacturer, Service Company
ISO/TS 16949:2002 certified manufacturer & distributor of O-rings including high pressure, high temperature & tight tolerance O-rings. Materials include Viton®, Buna-N, silicone, Chemraz®, EPDM, PTFE & neoprene. Services include packaging, bar coding & private labeling. Capabilities include CNC machining, high speed die cutting & in house bun skiving & laminating. Markets served include automotive, electronics, aerospace, defense, power generation, copier, hydraulics, filtration, pump, valve, compressor, medical & lighting. Military Spec. O-rings available. FDA & UL® approved.

Porter Seal Denver - Centennial, CO
Distributor, Custom Manufacturer
Distributor of standard & custom high & tight tolerance O-rings. Types of O-rings include spliced, subminiature & special custom sized O-rings. Available in nitrile (Buna-N), EPDM, silicone, Viton®, fluorosilicone, Aflas®, neoprene & Kalrez® materials. O-rings range in nominal IDs from 1/32 in. to 26 in. & actual IDs from 0.029 in. with +/-0.004 in. accuracy to 25.940 in. with +/-0.120 in. accuracy. O-rings are also available in metric sizes.

FloDynamix - a Div. of NuGenTec - Emeryville, CA
Manufacturer, Service Company
ISO 9000 certified custom manufacturer of Gumlast® perfluoroelastomer parts including high pressure & temperature & high & tight tolerance O-rings & seals. Available with -85 degrees C to +320 degrees C operating temperature. Valve stem packing, low closure force & metal detectable seals & custom shapes are also available. Industries served include oil & gas, chemical processing & electronics. FDA, 3-A & USP Class VI compliant.
Brand Names: FloDynamix, Gumlast

Dichtomatik - Shakopee, MN
Distributor, Manufacturer, Custom Manufacturer
ISO 9001:2000 certified custom manufacturer of O-rings including high temperature, high tolerance, semiconductor, & tight tolerance. O-ring materials include NBR, Viton®, silicone & neoprene materials. O-rings are available in various sizes in inch & metric sizes. O-rings are also available for dynamic & static applications.

RT Dygert International - Niles, IL
Distributor, Custom Manufacturer
ISO 9001:2000 certified distributor of O-rings such as high tolerance O-rings, high pressure O-rings, high temperature O-rings, high tolerance O-rings, & tight tolerance O-rings. Molding technology includes compression, vacuum compression, transfer, injection, lathe cutting, extrusion, PTFE molding, rapid prototyping, & production tooling. Value added services such as JIT kitting, bar coding, audit bin stocking, subassembly, parts washing, chlorination, material selection & development, & electronic data interchange (EDI). Industries served include fluid power, chemical, beverage, agriculture, & plumbing.