NSF/ANSI 51 Certification

NSF/ANSI 51 is a standard for materials and finishes used in commercial food equipment.

It applies to materials used in food preparation, processing, handling, dispensing, and storage equipment.

NSF-certified materials may be used for seals, gaskets, silicone rubber tubing, O-rings, and extruded profiles.

Certification applies only to the formulations and product forms listed in the current certification scope.

Silicone rubber components used in commercial food equipment must suit food-processing and handling conditions.

NSF/ANSI 51 provides a recognized standard for evaluating materials and finishes used in this equipment.

Elastostar Rubber Corporation manufactures custom silicone seals, gaskets, tubing, O-rings, and extruded profiles for food-processing machinery.

Products can be developed from drawings, dimensions, or samples for food, beverage, bakery, and dairy equipment.

Our Accreditations

View Elastostar’s NSF/ANSI 51 Certification

The certificate below confirms Elastostar Rubber Corporation’s recognition by NSF International for compliance with NSF/ANSI 51.

This certification demonstrates that products appearing in the NSF Official Listing meet the applicable requirements of the standard and are authorized to bear the NSF Mark.

Certificate Details

Certified Company: Elastostar Rubber Corporation
Certified Facility: Columbus, Ohio, USA
Certification Standard: NSF/ANSI 51
Certificate Number: C0181580-01
Issuing Organization: NSF International
Certificate Date: August 7, 2014

Certification Scope

Elastostar Rubber Corporation is recognized as complying with NSF/ANSI 51 and all applicable requirements.

Products appearing in the NSF Official Listing are authorized to bear the NSF Mark.

NSF/ANSI 51 Requirements for Food-Equipment Manufacturers

Food equipment is exposed to repeated production cycles, moisture, temperature changes, food residue, and routine cleaning.

Rubber components used inside this equipment must maintain their fit and function throughout those conditions.

NSF/ANSI 51 gives equipment manufacturers a clear reference when selecting materials for commercial food applications. It can support:

Supports material selection for food-equipment components.

Provides certification documentation for quality and procurement teams.

Helps verify listed materials for applicable equipment requirements.

The certification also helps engineering and purchasing teams distinguish a listed material from a standard industrial silicone compound.

Silicone Materials for NSF/ANSI 51 Food-Equipment Applications

Material selection depends on temperature, cleaning, contact conditions, and part design.

Solid FDA-Grade White Silicone

● Solid FDA-grade white silicone is used for seals, gaskets, O-rings, and profiles.
● It provides flexibility and dimensional stability.
● It is suitable for repeated compression.

Platinum-Cured Silicone

● Platinum-cured silicone is suited to high-purity applications.
● It offers low extractables and minimal odor or taste transfer.
● It is commonly used for tubing and fluid transfer.

Silicone Sponge Rubber

● Silicone sponge is used for compressible seals around doors and panels.
● It provides good compression and recovery.
● Closed-cell silicone sponge can help reduce moisture, dust, and air passage.

High-Tear Silicone Rubber

● High-tear silicone is suited to seals, tubing, sleeves, and profiles.
● It provides good tear resistance.
● It is useful for components exposed to stretching or movement.

Reinforced Silicone Rubber

● Reinforced silicone provides added strength and dimensional stability.
● It is used for gaskets, sheets, and diaphragms.
● It helps resist stretching and deformation.

Metal and X-Ray Detectable Silicone

● Detectable silicone is used near food-product zones.
● It is suitable for seals, gaskets, tubing, and O-rings.
● FDA Metal and X-Ray Detectable Silicone Rubber is available for food-processing and packaging applications.

NSF/ANSI 51 Silicone Rubber Applications in Food-Processing Equipment

Silicone components support sealing and repeated cleaning across food-processing equipment.

Food-Processing Machinery

● Seals, gaskets, tubing, and O-rings are used in processing lines.
● Custom parts can support new or replacement equipment.
● See the Food Processing Industry.

Food-Equipment Manufacturing

● Custom parts are used for panels, housings, and connections.
● Components can be made from drawings or samples.
● Material and profile can match the application.

Beverage Processing Equipment

● Beverage equipment uses tubing, gaskets, and O-rings.
● Components support filling and liquid-transfer systems.
● Material selection depends on pressure and temperature.

Commercial Bakery Equipment

● Bakery machinery uses seals and gaskets.
● Components may face repeated heating and cleaning.
● Heat-resistant silicone supports elevated temperatures.

Dairy & Cheese-Processing Equipment

● Dairy equipment uses tubing, gaskets, and O-rings.
● Components may face liquids, steam, and sanitation.
● Food-grade silicone options may be used as required.

Pet-Food Processing Equipment

● Pet-food processing equipment uses seals and gaskets.
● Components support mixing and packaging equipment.
● Detectable materials may be used near product zones.

FAQ's

What is NSF/ANSI 51 certification?

NSF/ANSI 51 is a standard for materials and finishes used in commercial food equipment. It covers materials used in food preparation, processing, handling, dispensing, and storage equipment.

Which Elastostar products are covered by NSF certification?

Coverage depends on the active certificate or official listing. It may include specific silicone tubing, cord, seals, gaskets, O-rings, extruded profiles or other components manufactured from listed material formulations.

Does NSF certification apply to every Elastostar silicone product?

No, Certification applies to the materials, colors, product forms, and manufacturing scope identified in the official listing. Contact our team with the part details to confirm coverage.

Can customers request a copy of the NSF certificate?

Yes, Customers can download the available certificate from this page or contact Elastostar for the current certificate and related product documentation.

Which industries use NSF-certified silicone rubber products?

NSF-certified silicone products are commonly used in food-processing machinery, beverage systems, dairy equipment, bakery machinery, pet-food production, and commercial food-equipment manufacturing.

Is NSF/ANSI 51 the same as FDA 21 CFR 177.2600?

No. NSF/ANSI 51 covers materials and finishes used in commercial food equipment. FDA 21 CFR 177.2600 relates to rubber articles intended for repeated food contact under stated conditions. Some applications may require documentation for both.

What information should I provide when requesting a certified product?

Share the product drawing or dimensions, expected food contact, temperature range, pressure, cleaning method, required material hardness, and certification documents. These details help our team assess the material and manufacturing requirements.

Need NSF-Certified Silicone Rubber Products?

Send us your drawing, sample, dimensions or current part specifications. Our team will discuss the product shape, silicone material, operating conditions and certification records required for your food-processing equipment.

We manufacture custom silicone seals, gaskets, tubing, O-rings, extruded profiles and molded components for prototype, replacement and production requirements.

NSF/ANSI 51 Certified Silicone Rubber Products for Food Equipment

Elastostar Rubber Corporation manufactures standard and custom silicone rubber components for food-processing and food-equipment applications. Product availability in NSF-certified materials depends on the current certificate or official listing.

Silicone Rubber Seals

Silicone seals are used around equipment doors, panels, covers, and enclosures. Custom profiles can be produced to match required compression, space, and movement.

Custom Silicone Gaskets

Silicone gaskets are used between equipment surfaces, panels, housings, and covers. Custom die-cut, molded, spliced, and extruded designs are available.

Extruded Silicone Profiles

Custom extruded profiles are used around doors, frames, conveyors, and processing enclosures. Profiles can be produced in standard or application-specific shapes.

Silicone Rubber Tubing

Silicone tubing is used for liquid transfer, filling, dispensing, and equipment connections. Standard and custom sizes are available for food-grade applications.

Silicone O-Rings

Silicone O-rings are used in pumps, valves, fittings, and filling equipment. Standard, spliced, and vulcanized sizes can be manufactured.

Molded Components

Custom molded silicone components can be produced for equipment requiring specific shapes, sealing edges, or mounting features.

Certification note: Certification applies only to the formulations, colors, product forms, and manufacturing scope listed in the current NSF certificate or listing.

Related Food-Contact Standards and Grade Pages

Food-equipment specifications may reference multiple standards, each covering different requirements.

✔ FDA 21 CFR 177.2600:

FDA 21 CFR 177.2600 covers rubber articles for applicable repeated-use food contact.
It focuses on rubber formulation and food-contact conditions.
It may be specified alongside NSF/ANSI 51.

✔ NSF/ANSI 51 Silicone Rubber:

NSF/ANSI 51 applies to materials and finishes used in commercial food equipment.
Listed materials are evaluated for specified product types and uses.
Requirements should be confirmed for the individual application.

✔ 3-A Sanitary Standards:

3-A Sanitary Standards are widely used in dairy and hygienic processing equipment.
Silicone seals, gaskets, tubing, and O-rings may be specified.
Component design should support cleaning and inspection.

✔ HACCP Food-Safety Applications:

HACCP is a food-safety approach for identifying and controlling production hazards.
Rubber components may be assessed for wear, breakage, and contamination risks.
Food-grade or detectable silicone may be used near exposed product zones.