Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MASON Floor-Mount Vibration Isolator: Neoprene, 550 lb Capacity, 2 3/4 in Ht - Elastomer-Style Floor-Mount Vibration Isolators
MASONElastomer-Style Floor-Mount Vibration Isolators

MASON Floor-Mount Vibration Isolator: Neoprene, 550 lb Capacity, 2 3/4 in Ht

The MASON Floor-Mount Vibration Isolator: Neoprene (MPN 4C991) is an elastomer-style isolator with a 550 lb capacity, 2 3/4 in height, 3 5/16 in width, and a 1/2 in screw size, identified by its red type. 3G Electric…

SKU 3G-OTH-524771

Brand
MASON
Item
Floor-Mount Vibration Isolator: Neoprene, 550 lb Capacity, 2 3/4 in Ht
Category
Elastomer-Style Floor-Mount Vibration Isolators
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

MASON
Manufacturer Part Number
4C991
Type
Red
Wd
3 5/16 in
Ht
2 3/4 in
Capacity
550 lb
Screw Size
1/2 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MASON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MASON Floor-Mount Vibration Isolator: Neoprene (MPN 4C991) is an elastomer-style isolator with a 550 lb capacity, 2 3/4 in height, 3 5/16 in width, and a 1/2 in screw size, identified by its red type. 3G Electric interprets this demand and delivers genuine MASON isolators across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is a MASON floor-mount vibration isolator used for?

A MASON floor-mount vibration isolator reduces transmitted vibration from industrial machinery to building structures. It is commonly used under pumps, compressors, and HVAC equipment to minimize noise and structural fatigue. 3G Electric supplies genuine MASON isolators across 14 industrial departments, with specialist depth in combustion, pumps, and controls.

What are the specifications of the MASON 4C991 vibration isolator?

The MASON 4C991 is a neoprene elastomer-style floor-mount isolator with a 550 lb capacity, 2 3/4 in height, 3 5/16 in width, and a 1/2 in screw size. It is identified by its red type. 3G Electric sources this genuine MASON part for global delivery.

Where to buy MASON vibration isolators worldwide?

3G Electric supplies genuine MASON vibration isolators worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we interpret your demand and deliver the right part, including the 4C991 neoprene isolator, to any location. Contact us for availability and lead time.

How to install a MASON floor-mount vibration isolator?

Install the MASON isolator on a level, clean floor beneath the equipment foot. Align the 1/2 in screw hole with the mounting bolt and tighten to the manufacturer's torque specification. Ensure the isolator is not overloaded beyond its 550 lb capacity. 3G Electric provides genuine MASON parts for reliable installation.

Used in

Common applications for MASON
Hotel bathroom — MASON robe hook (chrome-plated) for guest towel hanging in high-humidity environments
Office restroom — MASON robe hook (satin finish) for employee coat and bag storage
Gym locker room — MASON robe hook (chrome-plated) for towel and clothing hooks near showers
Residential bathroom — MASON robe hook (satin finish) for bathrobe storage in master suites
Hospital patient room — MASON robe hook (chrome-plated) for personal item hanging in semi-private spaces

MASON Products

3G Electric supplies MASON elastomer-style floor-mount vibration isolators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from MASON

View all MASON parts
MASON Floor-Mount Vibration Isolator: Neoprene, 1,100 lb Capacity, 2 3/4 in Ht, 3 5/16 in Wd, Yellow (MPN 4C993). Key specifications — Brand: MASON; Screw Size: 1/2 in.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 1,100 lb Capacity, 2 3/4 in Ht, 3 5/16 in Wd, Yellow (MPN 4C993). Key specifications — Brand: MASON; Screw Size: 1/2 in.
MASON Floor-Mount Vibration Isolator: Neoprene, 4,300 lb Capacity, 2 3/4 in Ht, 4 3/8 in Wd, Yellow (MPN 4C997). Key specifications — Brand: MASON; Screw Size: 1/2 in.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 4,300 lb Capacity, 2 3/4 in Ht, 4 3/8 in Wd, Yellow (MPN 4C997). Key specifications — Brand: MASON; Screw Size: 1/2 in.
MASON Floor-Mount Vibration Isolator: Neoprene, 2,100 lb Capacity, 2 3/4 in Ht, 6 1/4 in Wd, Red (MPN 20UZ16). Key specifications — Brand: MASON.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 2,100 lb Capacity, 2 3/4 in Ht, 6 1/4 in Wd, Red (MPN 20UZ16). Key specifications — Brand: MASON.
MASON Floor-Mount Vibration Isolator: Neoprene, 1,000 lb Capacity, 2 1/2 in Ht, 4 3/4 in Wd, 3 in Dp (MPN 20UZ15). Key specifications — Brand: MASON.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 1,000 lb Capacity, 2 1/2 in Ht, 4 3/4 in Wd, 3 in Dp (MPN 20UZ15). Key specifications — Brand: MASON.
MASON Floor-Mount Vibration Isolator: Neoprene, 525 lb Capacity, 2 1/2 in Ht, 4 3/4 in Wd, 3 in Dp (MPN 20UZ14). Key specifications — Brand: MASON.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 525 lb Capacity, 2 1/2 in Ht, 4 3/4 in Wd, 3 in Dp (MPN 20UZ14). Key specifications — Brand: MASON.
MASON Floor-Mount Vibration Isolator: Neoprene, 3,500 lb Capacity, 2 3/4 in Ht, 6 1/4 in Wd, White (MPN 20UZ17). Key specifications — Brand: MASON.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 3,500 lb Capacity, 2 3/4 in Ht, 6 1/4 in Wd, White (MPN 20UZ17). Key specifications — Brand: MASON.
MASON Floor-Mount Vibration Isolator: Neoprene, 600 lb Capacity, 1 7/8 in Ht, 2 5/16 in Wd, Yellow (MPN 4C989). Key specifications — Brand: MASON; Screw Size: 3/8 in.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 600 lb Capacity, 1 7/8 in Ht, 2 5/16 in Wd, Yellow (MPN 4C989). Key specifications — Brand: MASON; Screw Size: 3/8 in.
MASON Floor-Mount Vibration Isolator: Neoprene, 75 lb Capacity, 1 1/2 in Ht, 1 5/8 in Wd, Green (MPN 4C955). Key specifications — Brand: MASON; Screw Size: 5/16 in.
MASON
MASON Floor-Mount Vibration Isolator: Neoprene, 75 lb Capacity, 1 1/2 in Ht, 1 5/8 in Wd, Green (MPN 4C955). Key specifications — Brand: MASON; Screw Size: 5/16 in.