DISTRIBUTOR-FIRST SUPPLY PARTNER · SINCE 1999 Live · Pneumatic Automation System
A composite push-to-connect (PTC) fitting is the workhorse pneumatic tube connector — a technopolymer or acetal body that joins tube-to-tube or tube-to-thread by pushing the tube in until it bottoms. It is the highest-volume fitting in any pneumatic plant: machine air drops, valve-to-cylinder runs, plant-air branches, MRO replacement. Sized by tube OD (outside diameter) in metric (4-16 mm) or inch (1/4"-1/2"), with thread ends in NPT (US tapered), BSPT (British tapered), BSPP (British parallel), or Metric. Installs at every cylinder port, valve port, FRL outlet, and tube junction. A complete catalog spans hundreds of SKUs once configuration, tube size, and thread type are crossed — which is why distributor stock depth is the structural play on this line.
Tips and pointers on when composite PTC is the right call — and when to spec something else. Scroll the strip →
Highest-volume pneumatic fitting in any plant — every cylinder port, every valve outlet, every machine drop. A 25-50 HP plant runs hundreds of fittings; one packaging machine, 30-80.
The premium-line spec detail: a stainless-steel grab-ring (not plastic collet) bites the tube OD and resists creep under vibration for years. Generic-collet imports walk the tube out in 12-18 months.
NPT, BSPT, BSPP, Metric × straight, elbow, tee, Y, cross, reducer, bulkhead, banjo. Industry Leader tier''s deep US stock means a 1/4" elbow on the truck Tuesday — the structural play on this line.
NBR (nitrile) standard — general air. FKM for oil-mist or elevated temperature. EPDM for hot water or caustic. Wrong elastomer fails in months; right elastomer runs years.
Composite body cracks at the thread root past envelope; O-ring seats deform. → Step up to metallic brass PTC for 230 PSI / 200°F industrial duty.
Oil softens technopolymer until the fitting blows the tube off. → Step up to brass PTC for CNC coolant-mist zones, compressor-oil aerosol, hot-side compressor rooms.
Composite is not NSF or stainless-certified; audit flags it on first walk-through. → Step over to NSF food-grade PTC for food-adjacent zones, stainless PTC for wet-contact and washdown.
From the machine spec sheet to the part number. Answer what you know, leave the rest blank, and send.
Type the competitor OEM part number (SMC, Pisco, Legris, Parker, Festo). We cross-reference the SPC equivalent live. Don't know it? Leave it blank and we cross-reference at RFQ.
The machine, line, or system this part lives on. Optional.
City, plant, or region. Optional.
Per order. Optional.
Pick the priority; the quote desk handles the cross-reference.
You don't win composite PTC on per-piece price. You win on stock depth, lead time, the matched bundle, and the grab-ring inside the fitting.
Each industry below uses this product across the listed areas. Open an industry to see how it fits the rest of its system.
Material Handling & Conveyors → 
General Manufacturing → Also applies to Machine actuation and pneumatic cylinder plumbing · Robot end-of-arm tooling and integrated automation · MRO replacement and service-call install · Pneumatic test stands, calibration rigs, engineering benches · OEM machine-build connection layer (non-engineered-system OEMs) · Vacuum-application pneumatic plumbing
Every entry is a real product on this site — linked, not just named. Quote them on the same line item.
Stock the 8-15 fast-mover SKUs (1/4" and 3/8" straight, elbow, branch tee in NPT; 6mm and 8mm metric equivalents) in 25- or 50-count packs for MRO restock cadence. A plant doing 50-100 fittings per quarter consumes packs faster than line-item ordering — pack pricing runs 5-10% below per-piece quoting.
Send us the application — a specialist routes you to the correct tier with a configured part. Lead-times and pricing returned within one business day.
—. We reply within one business day with pricing, lead-time, and configured parts.