The O-Ring Specialists

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MATERIALS FROM COMMODITY TO SPECIALTY:

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O-Ring Customization Examples:

  • Nearly Any Size Without Tool Fees
  • Any color or durometer Hardness
  • Medical Grade, USP Class VI, FDA, Drinking Water NSF-61, 3A
  • EMI Shielding, Conductive, Metal Detectable
  • Explosive Decompression
  • Semiconductor
  • Nuclear
  • High Temperature
  • High Pressure
  • Chemical Resistant
  • Internal or Surface Lubrication
  • Specialty Chemical Resistance
  • Extended Temperature Performance
  • EMI Shielding RFI Conductive
  • Coatings and Treatments
  • Specialty Bagging, Labeling, Marking, Kitting or inspection

Markez® Next generation FFKM perfluoroelastomer. Compare properties and cost to Kalrez® and Chemraz®.

EXPERIENCE THE MARCO ADVANTAGE:

Need parts fast?

Millions of O-Rings and seals available for same day shipping supplemented by an integrated worldwide network. Emergency production runs often delivered faster than some take to process specialty quotes. Our experienced team responds to basic requests within hours if not minutes and complex same day or next day.

Custom size or specialty material

Nearly all custom size O-Rings, washers, square rings, and X-Rings in almost every material are supplied without tooling fees. We design and manufacture custom shapes and develop specialty materials to deliver a performance advantage.

Live customer service

Communicate directly with our dedicated team of experienced professionals empowered to find creative ways to deliver service solutions. Voice calls are answered by a live person and we respond to email in hours if not minutes.

Engineering assistance

The Marco sales team is backed by expert engineers available for on demand conference calls to offer application specific material and design support.



O-Ring Size Charts
USA Parker 2- AS568A, JIS Japanese, Common Metric, BS British
Groove Design Assistance
Groove Design Charts and Considerations
Material Comparison Guide
Elastomer Materials vs. Common Application Environments
Chemical Compatibility Guide
Fluid Compatibility Ratings for Common Elastomer Materials.
Mil-Spec Reference Chart
A Chart of the Common Military Specifications
O-Ring Failure Analysis
Images and Descriptions of Common Failures

Popular Material Comparison Guide

Don't see what you need? 

Please contact an application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.    


Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunlight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
FFKM  FFKM, Kalrez®, Markez®, Chemraz®, Simriz®, Perlast®, Parfluor®, FFKM, Perfluoroelastomer  Many  Many  Varies 625  -40  2 3
FFKM Page High performance mateiral for ultimate chemical and temperature resistance. Kalrez®, Markez, Chemraz®, Simriz®, Perlast®, Parfluor® FFKM Perfluoroelastomer compounds available, or contact us with specific requirements.
B1000  BUNA-N (NBR) NITRILE  Black  70  Very High 250 -30 2 2
Datasheet Lowest cost highest inventory general purpose commodity NBR compound  (available in nearly any color and durometer)
B1001  BUNA-N (NBR) NITRILE  Black  90  High 250 -30 2 2 2
Datasheet General purpose NBR, higher pressure applications
B1002  BUNA-N (NBR) NITRILE  Black  70  Med 250 -30 2 2
Datasheet FDA Compliant NBR per 21 CFR 177.2600 for food contact and some medical uses
B1006  BUNA-N (NBR) NITRILE  Black  50  Med 250 -30 2 2
Datasheet General purpose softer than standard NBR to help seal rough or warped glands and or lower closure force applications
B1083  BUNA-N (NBR) NITRILE  Black  70  Med 275 -65  2 2
Datasheet Higher performance NBR, Improved lower and higher temperature resistance and oil resistance at higher temperature than standard NBR.  Similar to Parker N0794-75 and M83461
B1105 BUNA-N (NBR) NITRILE  Black  70  Low 250 -30 3 2 2 2
Datasheet Metal detectable NBR for contamination detection sensors, FDA Compliant per 21 CFR 177.2600 for food contact and some Life Sci uses (additional colors available)
M1000  BUNA-N (NBR) NITRILE  Black  70  Med 275 -65  2 1
Datasheet Military Specification Mil-Spec AMS-P-25732 , formerly MS28775-### per Mil-P-25732C-(1)
M1001  BUNA-N (NBR) NITRILE  Black  75 High 275 -65  2 1
Datasheet Military Specification Mil-Spec AMS-P-83461 Formerly M83461/1-### per MIL-P-83461B#3, improved low temp and hydraulic fluid resistance
R1001  HNBR Hydrogenated Nitrile  Black  70  Med 325 -30 2 2 2 1
Datasheet General purpose HNBR higher and lower temperature resistance and improved chemical and Freon resistace than tradtional NBR, compatible with most flex fuels
R1008 HNBR Hydrogenated Nitrile  Black  90
Low
350 -12 2 4 2 2 2 2 2 1 1 4
Datasheet Improved explosive decompression resistance HNBR for higher pressure applications in the Oilfield Industry, Norsok M-710 Compliant.
Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
V1000  FKM Viton® (A) Fluorocarbon  Black  75  Very High 437  -15 3 1
Datasheet Lowest cost highest inventory general purpose commodity FKM  (available in nearly any color and durometer)
V1002  FKM Viton® (A) Fluorocarbon  Black  75  High 437  -15 2 1
Datasheet Military Specification Mil-Spec AMS-R-83248 M83248/1-### per Mil-R-83248 TY-1 CL-1
V1003  FKM Viton® (A) Fluorocarbon  Brown  75  High 437  -15 3 1
Datasheet General purpose brown color FKM to diferentiate from standard black FKM, improved oxidation resistance
V1007  FKM Viton® (A) Fluorocarbon  Black  90  High 437  -15 3 1
Datasheet General purpose higher durometer FKM for higher pressure applications
V1038  FKM (GLT) Fluorocarbon  Black  75  Low 437  -40 2 3
Datasheet Lower temperature resistance and improved chemical resistance over standard A type FKM
V1118 FKM Viton® (F) Fluorocarbon  White 70 Low 437  -15 3 1
Datasheet Medical Grade USP Class VI compliant, commercial manufactured terpolymer FKM, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
V1020  FKM Viton® (ETP) Fluorocarbon  Black  75  Med 437  -6 3
Datasheet Best FKM family chemical resistance, known as Viton® ETP, Viton® Extreme and Super Viton®, improved base, amines, ketones, MTBE, MEK, MIBK resistance
V1090 FKM Viton® (GLT) Fluorocarbon  Black  90 Low 437 -40 2 1
Datasheet High performance FKM with higher and lower temperature resistance and harder durometer explosive decompression resistance, Norsok and Nace tested for Oilfiled.
V1086  FKM  (LTFE) Fluorocarbon  Black  75  Low 437  -54  2 1
Datasheet Lowest temperature resistant FKM with improved resistance to fuels over standard type A
Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
L1000  Aflas® (TFE/P)  Black  80  Med 450  15 2 2 2
Datasheet General purpose Aflas®, steam resistant, sour gas resistant, acid resistance, for chemical and oil industries  (higher performance Alfas® versions avaialble for oil drilling environmnets)
L1009 Aflas® (TFE/P)  Black  90 Low 475 32 2 2 2
Datasheet Higher performance and higher durometer Aflas®, improved explosive decompression resistance, steam resistance, sour gas resistance, acid resistance, tested to Norsok M-710 for oilfield
F1001  Fluorosilicone (FVMQ)  Blue  70  High 350  -80  3
Datasheet Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/1-### per Mil-R-25988 CL-1 GR-70, jet fuel resistance
S1000  Silicone (VMQ)  Orange  70  Very High 400  -75 3
Datasheet General purpose and FDA compliant Silicone per 21 CFR 177.2600   (available in nearly any color and durometer)
S1004  Silicone (VMQ)  Orange  40  Low 400  -75 3
Datasheet General purpose softer than standard Silicone to seal rough or warped glands and or low closure force applications
S1015 Silicone (VMQ)  Orange  70 Low 500 -65 3
Datasheet Higher temperature resistant Silicone
S1043 Silicone (VMQ)  Orange  50 Low 400  -103 3
Datasheet Lower temperature resistant Silicone
S1020  Silicone (VMQ)  Clear  70  Low 400  -65  3
Datasheet Clear-Translucent and FDA compliant Silicone per 21 CFR 177.2600
S1146 Silicone (VMQ)  White 70 Low 480 -75 3
Datasheet Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1083 Silicone (VMQ)  Clear  70 Low 400  -65  3
Datasheet Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1037 Silicone (VMQ)  Clear  70 Low 400  -65  3
Datasheet Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Clean Room Manufactured
S1081  Silicone (VMQ)  Orange  65  Low 350  -65  3
Datasheet EMI RFI Shielding Nickel Coated Graphite filled Silicone, Volume Resistivity 0.10 ohm-cm
Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
E1000  EPDM (Peroxide) Black  70  Very High 300  -65  2
Datasheet General purpose peroxide cured EPDM FDA compliant per 21 CFR 177.2600 and NSF61 for drinking water and food contact
E1005  EPDM (Sulfur) Black  70  Med 265  -65  2
Datasheet General purpose sulfur cured EPDM with lowest cost at very high volumes
E1097  EPDM (Peroxide)  Black  70  Low 300  -65  2
Datasheet Chloramine Resistant NSF61 for drinking water, food and dairy contact, peroxide cured EPDM FDA compliant per 21 CFR 177.2600, 3A USDA compliant
E1074 EPDM (Peroxide) White 70  Low 300  -65  2
Datasheet Medical Grade USP Class VI compliant EPDM, commercial manufactured, peroxide cured, FDA compliant per 21 CFR 177.2600, 3A Dairy USDA compliant
N1000  Neoprene® (CR) Black  70  Med 250 -40  2 2
Datasheet General purpose Neoprene®
P1000  PolyUrethane  Translucent  70  Med 250 -65  2 1
Datasheet High performance 70 durometer Polyurethane
P1001  PolyUrethane  Translucent  90  Med 250 -65  2 1
Datasheet High performance 90 durometer Polyurethane
P1004  PolyUrethane  Translucent  90  Med 180 -30 3 1
Datasheet General purpose 90 durometer Polyurethane
P1006  PolyUrethane  Translucent  70  Med 180 -30 3 1
Datasheet General purpose 70 durometer Polyurethane
T1000  PTFE Solid (Virgin) Teflon® White  N/A  Med 450  -250  1 1
Datasheet General purpose PTFE extreme chemical resistant ridged plastic only seals in limited applications  (consider FFKM for critical leak resistant applications)
T1002 FEP (Teflon®) Encapsulated Silicone  Orange Core  N/A  Med 400  -80  3
Datasheet General purpose extreme chemical resistant FEP (Teflon®) cover with encapsulated Silicone Solid core, can have leaking issues in some applications (consider FFKM for critical leak resistant applications)
T1021  PFA (Teflon®) Encapsulated Stainless Steel Spring  Silver Core  N/A  Low 500  -400
Datasheet High performance extreme chemical resistant FEP (Teflon®) cover with encapsulated Steel Spring core (cosider Spring Energized PTFE Seals for critical applications) 
Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor

Don't see what you need? Please contact an application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.

This guide is intended for general reference use only.
Selecting an O-Ring material for a specific application depends on many important criteria including:
Service Conditions (media to be sealed, temperature range, pressure/vacuum range, dynamic motion)
Design Attributes (component geometry, desired service life, installation considerations, tolerances)


O-Ring Kits and Accessories

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O-Ring-Kits Sizing-Cone and Tape O-Lube® O-Ring Cord

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O-Ring Splicing-Kits Extraction-Tools O-Ring Material Identifier


Marco Rubber Stocks High Quality Mil-Spec and Commercial Seals from:

Parker Seal

Seals and
Accessories

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High Perfomance Seals



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Back-Up Rings

X-Rings and Quad-Ring® Seals

Square Rings



View the Seals Page for alternative sealing needs.

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