Product: 4″ 15K Forum (FET) Style Swivel Joint Seal Kit | Code Red Compatible

1. Executive Summary: The Standard for High-Pressure Iron

In the high-stakes arena of hydraulic fracturing and flowback, Forum Energy Technologies (FET) swivel joints are ubiquitous. Known for their robust design and reliability, these “Code Red” (15,000 PSI) assets require maintenance kits that are equally tough.

Royal Way 4″ 15K FET Style Repair Kits are the premium aftermarket solution for recertifying your Forum style iron. Engineered to meet the exacting dimensional standards of the Forum / Flowvalve packing bore, our kits provide a secure, leak-free seal under the most punishing pulsating pressures. We deliver OEM-level performance—complete with hardened bearing balls and heavy-duty anti-extrusion rings—at a value that keeps your fleet competitive.

2. Compatibility Guide: Forum & Flowvalve Legacy

This kit bridges the gap between legacy hardware and modern equipment, ensuring a perfect fit for the FET lineage.

• Target Equipment: 4-Inch Swivel Joints.

• Pressure Rating: 15,000 PSI CWP (Code Red).

• Style: Forum (FET) / Flowvalve Style.

• Identification: Fits swivels stamped with “Forum”, “FET”, or older “Flowvalve” markings rated for 15K.

• Connection Type: Compatible with Fig 1502 Union End swivels.

⚠️ SAFETY WARNING: This kit is designed for 15,000 PSI equipment. Do NOT install in 10,000 PSI (Code Black) swivels, as the seal geometry differs. Always verify the pressure rating stamped on the swivel body.

3. Kit Contents: A Complete Code Red Overhaul

At 15,000 PSI, every component matters. Our kit includes:

1. 15K Primary Packing:

   • Profile: Deep-V or Modified Lip Seal profile specific to the FET gland design.

   • Material: 90 Durometer NBR (Standard) or HNBR (Sour Gas).

2. Heavy-Duty Anti-Extrusion Ring:

   • Material: Zinc-Plated Steel or Stainless Steel.

   • Function: This is the critical safety component. It bridges the extrusion gap to prevent the rubber seal from blowing out at 15K PSI. Our rings are precision-machined to prevent metal-to-metal galling.

3. Load Bearing Balls:

   • Qty: Complete sets for 3 raceways.

   • Spec: Hardened Chrome Steel to resist brinelling under heavy pipe loads.

4. Dust Seals:

   • Keeps frac sand and moisture out of the ball races.

5. Grease Zerk:

   • Standard maintenance fitting.

4. Material Options: Service Classifications

Option A: Standard Service (NBR)

• Best For: Hydraulic Fracturing, Water Transfer, Cementing.

• Performance: High abrasion resistance against proppants.

• Temp: -20°F to +250°F.

Option B: Sour Gas / High-Temp (HNBR or Viton®)

• Best For: Sour Gas (H2S), Acidizing, Hot Flowback.

• Performance:

  • HNBR (Green): Superior toughness and H2S resistance.

  • Viton® (Orange): Best for high heat (>300°F) and acid blends.

5. Technical Focus: The “Stack Height” Precision

One common issue with aftermarket FET kits is incorrect “Stack Height” (the combined height of the seal + backup ring).

• The Issue: If the stack is too tall, the swivel binds and won’t rotate. If too short, it leaks.

• The Royal Way Guarantee: We digitally scan OEM components to ensure our Seal + Backup combination matches the original Forum compression depth exactly. This guarantees a swivel that rotates smoothly by hand after rebuilding, yet seals tight under pressure.

6. Operational Best Practices

• Race Inspection: 4″ 15K iron is heavy. Inspect the ball races for “flat spots” (brinelling) caused by dropping the iron or excessive hammer union torque. A damaged race will destroy new bearings in hours.

• Lubrication: FET style swivels rely on grease not just for lubrication, but to help seal out contaminants. Purge the joint with fresh grease after every job.

• Back-Up Orientation: Ensure the metal backup ring is installed on the non-pressure side of the rubber seal (facing away from the flow).

7. Ordering Information

(Disclaimer: Forum™, FET™, and Flowvalve™ are trademarks of Forum Energy Technologies. Royal Way is an independent manufacturer of compatible aftermarket parts.)