Friction Bar Hard Rubber

Product Code : SCL-EI-10635

The Friction Bar Hard Rubber from Lab Glassware Manufacturer is an electrostatics teaching rod engineered for generating static charge by friction in school physics laboratories. Manufactured and supplied from Ambala, Haryana, India since 1982, Lab Glassware Manufacturer exports electrostatics teaching apparatus to schools, colleges, and STEM training institutes across East Africa, including Kenya, Tanzania, Uganda, and Rwanda, supporting institutional procurement and export tenders throughout the region.

Quick answer: The Friction Bar Hard Rubber is a rod that generates static charge when rubbed with fur, wool, or a compatible friction skin, used to demonstrate charge transfer, attraction, and repulsion with paper pieces, pith balls, or an electroscope in supervised school physics and STEM electrostatics practicals.

Key Features

• Hard rubber friction bar for static electricity and electrostatics demonstrations.
• Useful for teaching charging by friction, charge transfer, attraction, and repulsion.
• Can be used with friction skin, fur, wool, pith balls, and electroscopes.
• Reusable apparatus for supervised school physics and STEM experiments.
• Simple rod format supports quick classroom setup and repeated demonstrations.
• Helps students connect electrostatic theory with visible experimental observation.
• Suitable for practical lessons, science fairs, and teacher demonstrations.

What’s Included

• 1 x Friction Bar Hard Rubber
• Protective packing for storage and dispatch
• Optional friction skin, fur pad, wool pad, pith balls, electroscope, or activity guide — only if specified in the order

Applications / Uses

• Generating static charge by rubbing the hard rubber bar with a suitable material.
• Demonstrating attraction and repulsion between charged objects.
• Showing charge transfer with an electroscope or pith ball apparatus.
• Teaching conductors, insulators, and basic electrostatic behaviour.
• Supporting classroom practical work on static electricity and electrostatics.
• Pairing with Safety Protective Wears and other scientific lab products for structured laboratory activities.

How to Use the Friction Bar Hard Rubber

1. Place the hard rubber bar and friction material on a clean, dry laboratory bench.
2. Ensure both materials are dry, because moisture reduces static charge buildup.
3. Hold one end of the hard rubber bar and rub the other end with the friction material.
4. Bring the charged bar near paper pieces, pith balls, or an electroscope.
5. Observe attraction, repulsion, or electroscope leaf movement as per the experiment.
6. Discharge the bar safely and store it after the activity.

Safety note: Use the Friction Bar Hard Rubber only for low-energy school electrostatics experiments. Keep it away from flames, wet benches, solvents, and high-voltage apparatus not designed for student use.

Care & Maintenance

• Store the bar in a dry, clean, labelled box after use.
• Keep the surface free from oil, water, dust, and laboratory chemicals.
• Clean gently with a dry soft cloth; do not use abrasive cleaners.
• Replace the bar if it becomes cracked, badly scratched, warped, or ineffective for charging.

Completing the Electrostatics Demonstration Set

The Friction Bar Hard Rubber pairs directly with Lab Glassware Manufacturer’s dedicated Friction Skin for Electrostatic Experiments, the consumable rubbing material used to charge the bar. For a broader electrostatics teaching setup that includes additional demonstration accessories, see the Electrostatics Starter Kit.

Why Choose Lab Glassware Manufacturer

Lab Glassware Manufacturer supplies educational laboratory products for schools, colleges, universities, science laboratories, and institutional procurement projects. The company supports laboratory glassware, physics apparatus, electrostatics accessories, STEM teaching aids, and classroom demonstration equipment. Buyers can source the Friction Bar Hard Rubber for school tenders, electrostatics kits, physics labs, and export-oriented educational supply requirements across Kenya, Tanzania, Uganda, and Rwanda.

Frequently Asked Questions

What is a Friction Bar Hard Rubber used for?
A Friction Bar Hard Rubber is used to generate static charge by friction in school physics experiments. It helps demonstrate charge transfer, attraction, repulsion, and electroscope response.

Is the hard rubber bar suitable for school students?
Yes. It is suitable for supervised school and STEM experiments when used in dry conditions with appropriate electrostatics apparatus.

What material is used to rub the hard rubber bar?
Hard rubber bars are commonly rubbed with fur, wool, or a compatible friction skin. The exact supplied friction material should be confirmed if it is included in the kit.

Does the bar include an electroscope or pith balls?
The standard listing should be treated as the hard rubber bar only unless an electroscope, pith balls, friction skin, or full electrostatics kit is specifically mentioned.

Why should the experiment be done in dry conditions?
Dry conditions help static charge remain on the bar for observation. Moisture allows charge to leak away quickly and weakens the demonstration effect.

What details should be confirmed before purchase?
Confirm the bar length, diameter, material grade, quantity, surface finish, packaging, and whether friction material or electrostatics accessories are included.

Related Products

• Friction Skin for Electrostatic Experiments
• Electrostatics Starter Kit

Request a Quote

For pricing, bulk school and college orders, or export tender submissions for the Friction Bar Hard Rubber, please contact Lab Glassware Manufacturer or view current lab equipment tenders.

Last updated: September 2026