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MASTERY MART 14-22 Inch Extra Long Office Chair Cylinder Replacement with Gloves, 8" Stroke Gas Lift, Heavy Duty 1000 Lbs Class 4 Hydraulic Pneumatic Piston, Universal Fit - size: 8'' Travel Length

MASTERY MART 14-22 Inch Extra Long Office Chair Cylinder Replacement with Gloves, 8" Stroke Gas Lift, Heavy Duty 1000 Lbs Class 4 Hydraulic Pneumatic Piston, Universal Fit - size: 8'' Travel Length

$63.06 USD
$63.06 USD
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About this item

  • 【 Stop Your Chair from Sinking 】 — High-precision gas pressure seal and premium-grade carbon steel piston rod eliminate the most common chair failure: seat slowly sinking down under weight. BIFMA Class 4 certified tested to maintain set height for years, even under frequent daily use. No more readjusting every few minutes.
  • 【 8"Stroke — For Tall Chairs & Standing Desks 】 — Compressed length: 13.97 in (355 mm); fully extended: 21.85 in (555 mm). Designed for tall users over 6'2", drafting chairs, bar stools, and standing desk chairs. Total seat height range: approximately 20–27 inches from floor. Measure your existing cylinder length (outer tube, bottom to top) before ordering to confirm fit.
  • 【 Fits Tall Chairs — 2 Standard Sizes 】 — Outer cylinder diameter: 2 in (50 mm) fits into the chair base socket. Piston shaft diameter: 1-1/8 in (28 mm) connects to the seat plate. Fits most drafting chairs, bar stools, counter-height stools, and tall office chairs. Check both your base socket size and seat plate hole diameter before purchase.
  • 【 Class 4 Heavy Duty Carbon Steel 】 — Manufactured to BIFMA/ANSI high industry standard. Premium steel construction supports up to 1000 lbs. Engineered to prevent sinking in heavy-use environments and eliminates common height adjustment failures.
  • 【 5-Minute Tool-Free Installation 】 — Lean the chair on its side. Strike the base ring upward with a rubber mallet to release the old cylinder — no screwdriver needed. Slide the new cylinder straight into the base socket until it clicks firmly. Flip the chair upright, reattach the seat plate, and sit down to lock the piston in place. Rubber gloves included for a clean, safe grip during removal.

Overview

  • Brand: MASTERY MART
  • Color: Matte Black
  • Material: Carbon Steel
  • Size: 8'' Travel Length
  • Item Weight: 2 pounds

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Sample Customer — Seattle, Washington

    I found several useful workspace products at OfficeMellow, and the overall selection felt practical and easy to browse. The items fit well into my home office and helped make the space feel more organized, comfortable, and ready for everyday work.

  • ⭐⭐⭐⭐⭐

    Sample Customer — Austin, Texas

    OfficeMellow offers a thoughtful mix of furniture, electronics, and office accessories. The product information was easy to understand, and I was able to find options that matched the size and layout of my workspace without making the setup feel complicated.

  • ⭐⭐⭐⭐⭐

    Sample Customer — Denver, Colorado

    I like that the products are focused on real workspace needs rather than unnecessary extras. I chose a few items for desk organization and device positioning, and they helped create a cleaner setup that feels easier to use throughout the day.

  • ⭐⭐⭐⭐⭐

    Sample Customer — Portland, Oregon

    The selection worked well for upgrading my small home office. The products felt practical, fit naturally into my existing setup, and made it easier to keep my equipment, cables, and work area organized. I would consider shopping here again.

FAQ

What types of products does OfficeMellow sell?

OfficeMellow specializes in home office and small business workspace products, including office desks, chairs, storage furniture, monitor and laptop stands, office electronics, cable management, task lighting, shredders, laminators, scanners, docking stations, and related accessories.

How can I check whether a product will fit my workspace?

Please review the dimensions, weight capacity, mounting requirements, and available clearance listed on the product page. For desks, chairs, cabinets, and mounted accessories, we recommend measuring your room, doorway, desk surface, and installation area before ordering.

How do I know whether an electronic accessory is compatible with my device?

Check the product page for supported device models, port types, operating systems, voltage, plug type, monitor size, weight limits, or printer compatibility. Contact us before purchasing if you are uncertain about compatibility.

Do office furniture products require assembly?

Many desks, chairs, cabinets, stands, and shelving products require some assembly. Assembly requirements and included hardware vary by product, so please review the individual product description and instructions before purchase and use.

How much does shipping cost?

OfficeMellow charges a flat standard shipping fee of $6.90 per eligible order, unless a different charge or delivery restriction is clearly shown during checkout.

How long does order processing and delivery take?

Orders are generally processed within 1–3 business days. Estimated delivery within the United States is typically 5–10 business days after shipment. Oversized furniture, split shipments, carrier delays, or high-demand periods may require additional time.

Why did only part of my order arrive?

Products may be stored in different warehouses or shipped in multiple boxes. As a result, items and furniture components may arrive separately with different tracking numbers. Please review all shipping confirmation emails before reporting an incomplete delivery.

Can I change or cancel my order?

Please contact us as soon as possible after placing your order. We will make a reasonable effort to update or cancel an order that has not entered processing or shipment, but changes and cancellations cannot be guaranteed once fulfillment has begun.

What is your return policy?

Eligible products may generally be returned within 30 calendar days of delivery, subject to our Return & Refund Policy. Items should be unused, unassembled, uninstalled, and returned with their original packaging, hardware, manuals, and accessories. Contact us for authorization before sending a return.

What should I do if my product arrives damaged, defective, or incomplete?

Contact us within 7 calendar days of delivery whenever reasonably possible. Include your order number, a description of the issue, and clear photographs of the product, packaging, shipping label, and affected components. Please retain all packaging until the claim has been reviewed.

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